diff --git a/man2/add_key.2 b/man2/add_key.2
index 0d136e4aa..3b41580a2 100644
--- a/man2/add_key.2
+++ b/man2/add_key.2
@@ -147,7 +147,7 @@ On success,
 returns the serial number of the key it created or updated.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES
diff --git a/man2/futex.2 b/man2/futex.2
index 04df4896f..5f41abaa0 100644
--- a/man2/futex.2
+++ b/man2/futex.2
@@ -1320,7 +1320,7 @@ was invoked via
 .BR syscall (2)),
 all operations return \-1 and set
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .PP
 The return value on success depends on the operation,
 as described in the following list:
diff --git a/man2/getpriority.2 b/man2/getpriority.2
index 4646ca533..e3fbeb4f3 100644
--- a/man2/getpriority.2
+++ b/man2/getpriority.2
@@ -123,7 +123,7 @@ On success,
 returns the calling thread's nice value, which may be a negative number.
 On error, it returns \-1 and sets
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .PP
 Since a successful call to
 .BR getpriority ()
diff --git a/man2/inotify_rm_watch.2 b/man2/inotify_rm_watch.2
index eae66d59d..459642ebc 100644
--- a/man2/inotify_rm_watch.2
+++ b/man2/inotify_rm_watch.2
@@ -53,7 +53,7 @@ On success,
 returns zero.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF
diff --git a/man2/ioctl_userfaultfd.2 b/man2/ioctl_userfaultfd.2
index 14dba4243..945badf08 100644
--- a/man2/ioctl_userfaultfd.2
+++ b/man2/ioctl_userfaultfd.2
@@ -235,7 +235,7 @@ This
 operation returns 0 on success.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 Possible errors include:
 .TP
 .B EFAULT
@@ -333,7 +333,7 @@ This
 operation returns 0 on success.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 Possible errors include:
 .\" FIXME Is the following error list correct?
 .\"
@@ -386,7 +386,7 @@ This
 operation returns 0 on success.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 Possible errors include:
 .TP
 .B EINVAL
@@ -466,7 +466,7 @@ operation returns 0 on success.
 In this case, the entire area was copied.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 Possible errors include:
 .TP
 .B EAGAIN
@@ -570,7 +570,7 @@ operation returns 0 on success.
 In this case, the entire area was zeroed.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 Possible errors include:
 .TP
 .B EAGAIN
@@ -636,7 +636,7 @@ This
 operation returns 0 on success.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 Possible errors include:
 .TP
 .B EINVAL
diff --git a/man2/mmap.2 b/man2/mmap.2
index 30170fbed..b44a8f1b7 100644
--- a/man2/mmap.2
+++ b/man2/mmap.2
@@ -497,14 +497,14 @@ On error, the value
 .IR "(void\ *)\ \-1" )
 is returned, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .PP
 On success,
 .BR munmap ()
 returns 0.
 On failure, it returns \-1, and
 .I errno
-is set to indicate the cause of the error (probably to
+is set to indicate the error (probably to
 .BR EINVAL ).
 .SH ERRORS
 .TP
diff --git a/man2/open_by_handle_at.2 b/man2/open_by_handle_at.2
index 56228a1ae..eb2ef1459 100644
--- a/man2/open_by_handle_at.2
+++ b/man2/open_by_handle_at.2
@@ -282,7 +282,7 @@ returns a file descriptor (a nonnegative integer).
 .PP
 In the event of an error, both system calls return \-1 and set
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .BR name_to_handle_at ()
 and
diff --git a/man2/perfmonctl.2 b/man2/perfmonctl.2
index 8c010069d..1c0197190 100644
--- a/man2/perfmonctl.2
+++ b/man2/perfmonctl.2
@@ -193,7 +193,7 @@ Reset PMC registers to default values.
 returns zero when the operation is successful.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH VERSIONS
 .BR perfmonctl ()
 is available since Linux 2.4.
diff --git a/man2/pidfd_getfd.2 b/man2/pidfd_getfd.2
index 1a1319aae..636aa46cb 100644
--- a/man2/pidfd_getfd.2
+++ b/man2/pidfd_getfd.2
@@ -74,7 +74,7 @@ On success,
 returns a file descriptor (a nonnegative integer).
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF
diff --git a/man2/pidfd_open.2 b/man2/pidfd_open.2
index b6a321562..51418d3db 100644
--- a/man2/pidfd_open.2
+++ b/man2/pidfd_open.2
@@ -53,7 +53,7 @@ On success,
 returns a file descriptor (a nonnegative integer).
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man2/pidfd_send_signal.2 b/man2/pidfd_send_signal.2
index da10c7d0f..02b8fac4b 100644
--- a/man2/pidfd_send_signal.2
+++ b/man2/pidfd_send_signal.2
@@ -96,7 +96,7 @@ On success,
 returns 0.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF
diff --git a/man2/poll.2 b/man2/poll.2
index b45e37f8a..f32051522 100644
--- a/man2/poll.2
+++ b/man2/poll.2
@@ -354,7 +354,7 @@ before any file descriptors became read.
 .PP
 On error, \-1 is returned, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT
diff --git a/man2/pread.2 b/man2/pread.2
index 9f2cabaa7..020467142 100644
--- a/man2/pread.2
+++ b/man2/pread.2
@@ -89,7 +89,7 @@ and
 .PP
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .BR pread ()
 can fail and set
diff --git a/man2/readahead.2 b/man2/readahead.2
index c551d8771..4f606770e 100644
--- a/man2/readahead.2
+++ b/man2/readahead.2
@@ -68,7 +68,7 @@ On success,
 .BR readahead ()
 returns 0; on failure, \-1 is returned, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF
diff --git a/man2/request_key.2 b/man2/request_key.2
index 997c221b7..89bde01c3 100644
--- a/man2/request_key.2
+++ b/man2/request_key.2
@@ -378,7 +378,7 @@ On success,
 returns the serial number of the key it found or caused to be created.
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EACCES
diff --git a/man2/sched_setattr.2 b/man2/sched_setattr.2
index 3d255f622..ecbdbffc4 100644
--- a/man2/sched_setattr.2
+++ b/man2/sched_setattr.2
@@ -303,7 +303,7 @@ and
 return 0.
 On error, \-1 is returned, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .BR sched_getattr ()
 and
diff --git a/man2/seccomp.2 b/man2/seccomp.2
index 181e89bfc..cd1256a19 100644
--- a/man2/seccomp.2
+++ b/man2/seccomp.2
@@ -727,7 +727,7 @@ and
 .BR gettid (2).)
 On other errors, \-1 is returned, and
 .IR errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .BR seccomp ()
 can fail for the following reasons:
diff --git a/man2/shmop.2 b/man2/shmop.2
index 111f2f403..941ea6686 100644
--- a/man2/shmop.2
+++ b/man2/shmop.2
@@ -170,13 +170,13 @@ returns the address of the attached shared memory segment; on error,
 .I (void\ *)\ \-1
 is returned, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .PP
 On success,
 .BR shmdt ()
 returns 0; on error \-1 is returned, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 When
 .BR shmat ()
diff --git a/man2/sysinfo.2 b/man2/sysinfo.2
index ab58dae88..eedf0755f 100644
--- a/man2/sysinfo.2
+++ b/man2/sysinfo.2
@@ -104,7 +104,7 @@ On success,
 returns zero.
 On error, \-1 is returned, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EFAULT
diff --git a/man2/write.2 b/man2/write.2
index 37b251d9f..b6c42df8a 100644
--- a/man2/write.2
+++ b/man2/write.2
@@ -98,7 +98,7 @@ see NOTES for the upper limit on Linux.
 .SH RETURN VALUE
 On success, the number of bytes written is returned.
 On error, \-1 is returned, and \fIerrno\fP is set
-to indicate the cause of the error.
+to indicate the error.
 .PP
 Note that a successful
 .BR write ()
diff --git a/man3/bindresvport.3 b/man3/bindresvport.3
index 9bcecd047..805a784cd 100644
--- a/man3/bindresvport.3
+++ b/man3/bindresvport.3
@@ -70,7 +70,7 @@ has no way to return the port number actually allocated.
 .BR bindresvport ()
 returns 0 on success; otherwise \-1 is returned and
 .I errno
-set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .BR bindresvport ()
 can fail for any of the same reasons as
diff --git a/man3/ctime.3 b/man3/ctime.3
index b06640a61..3aeb1c692 100644
--- a/man3/ctime.3
+++ b/man3/ctime.3
@@ -311,7 +311,7 @@ returns the value
 The remaining functions return NULL on error.
 On error,
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EOVERFLOW
diff --git a/man3/dirfd.3 b/man3/dirfd.3
index e38831ba0..7a9ad353f 100644
--- a/man3/dirfd.3
+++ b/man3/dirfd.3
@@ -64,7 +64,7 @@ On success,
 returns a file descriptor (a nonnegative integer).
 On error, \-1 is returned, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 POSIX.1-2008 specifies two errors,
 neither of which is returned by the current
diff --git a/man3/duplocale.3 b/man3/duplocale.3
index 751ab5bf5..bf473c28a 100644
--- a/man3/duplocale.3
+++ b/man3/duplocale.3
@@ -66,7 +66,7 @@ On error, it returns
 .IR "(locale_t)\ 0",
 and sets
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .TP
 .B ENOMEM
diff --git a/man3/fpathconf.3 b/man3/fpathconf.3
index 7cca6f256..e51d0643c 100644
--- a/man3/fpathconf.3
+++ b/man3/fpathconf.3
@@ -176,7 +176,7 @@ The return value of these functions is one of the following:
 .IP * 3
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error
+is set to indicate the error
 (for example,
 .BR EINVAL ,
 indicating that
diff --git a/man3/get_phys_pages.3 b/man3/get_phys_pages.3
index 72bdae72c..55935128f 100644
--- a/man3/get_phys_pages.3
+++ b/man3/get_phys_pages.3
@@ -47,7 +47,7 @@ On success,
 these functions return a nonnegative value as given in DESCRIPTION.
 On failure, they return \-1 and set
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .TP
 .B ENOSYS
diff --git a/man3/getlogin.3 b/man3/getlogin.3
index cebb2232d..f3d4e01a2 100644
--- a/man3/getlogin.3
+++ b/man3/getlogin.3
@@ -107,7 +107,7 @@ precisely because the user can set \fBLOGNAME\fP arbitrarily.
 returns a pointer to the username when successful,
 and NULL on failure, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .BR getlogin_r ()
 returns 0 when successful, and nonzero on failure.
 .SH ERRORS
diff --git a/man3/getspnam.3 b/man3/getspnam.3
index d7d781c76..a92627fc4 100644
--- a/man3/getspnam.3
+++ b/man3/getspnam.3
@@ -208,7 +208,7 @@ are available or if an error occurs during processing.
 The functions which have \fIint\fP as the return value return 0 for
 success and \-1 for failure, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .PP
 For the nonreentrant functions, the return value may point to static area,
 and may be overwritten by subsequent calls to these functions.
diff --git a/man3/hsearch.3 b/man3/hsearch.3
index a4d1a6422..a2b00af21 100644
--- a/man3/hsearch.3
+++ b/man3/hsearch.3
@@ -175,7 +175,7 @@ and
 return nonzero on success.
 They return 0 on error, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .PP
 On success,
 .BR hsearch ()
@@ -189,7 +189,7 @@ cannot be found in the hash table.
 returns nonzero on success, and 0 on error.
 In the event of an error, these two functions set
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .BR hcreate_r ()
 and
diff --git a/man3/inet_net_pton.3 b/man3/inet_net_pton.3
index 94329ff8b..4c16ea6fe 100644
--- a/man3/inet_net_pton.3
+++ b/man3/inet_net_pton.3
@@ -125,7 +125,7 @@ On success,
 returns the number of bits in the network number.
 On error, it returns \-1, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .PP
 On success,
 .BR inet_net_ntop ()
@@ -133,7 +133,7 @@ returns
 .IR pres .
 On error, it returns NULL, and
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 .SH ERRORS
 .TP
 .B EAFNOSUPPORT
diff --git a/man3/newlocale.3 b/man3/newlocale.3
index 82f651911..d95c14ba9 100644
--- a/man3/newlocale.3
+++ b/man3/newlocale.3
@@ -181,7 +181,7 @@ returns
 .IR "(locale_t)\ 0",
 and sets
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/posix_memalign.3 b/man3/posix_memalign.3
index a7d5d185b..d063f8932 100644
--- a/man3/posix_memalign.3
+++ b/man3/posix_memalign.3
@@ -135,7 +135,7 @@ and
 .BR pvalloc ()
 return a pointer to the allocated memory on success.
 On error, NULL is returned, and \fIerrno\fP is set
-to indicate the cause of the error.
+to indicate the error.
 .PP
 .BR posix_memalign ()
 returns zero on success, or one of the error values listed in the
diff --git a/man3/pthread_mutex_consistent.3 b/man3/pthread_mutex_consistent.3
index 2e56e44e0..13a216312 100644
--- a/man3/pthread_mutex_consistent.3
+++ b/man3/pthread_mutex_consistent.3
@@ -58,7 +58,7 @@ On success,
 .IR pthread_mutex_consistent ()
 returns 0.
 Otherwise,
-it returns a positive error number to indicate the cause of the error.
+it returns a positive error number to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/random.3 b/man3/random.3
index d77a9b200..639e9a18c 100644
--- a/man3/random.3
+++ b/man3/random.3
@@ -138,7 +138,7 @@ On success,
 returns a pointer to the previous state array.
 On error, it returns NULL, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/random_r.3 b/man3/random_r.3
index 7be96e59d..5363e5e78 100644
--- a/man3/random_r.3
+++ b/man3/random_r.3
@@ -127,7 +127,7 @@ or be the result of a previous call of
 All of these functions return 0 on success.
 On error, \-1 is returned, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/scandir.3 b/man3/scandir.3
index 8a11720d5..328c70f69 100644
--- a/man3/scandir.3
+++ b/man3/scandir.3
@@ -178,7 +178,7 @@ function returns the number of directory entries
 selected.
 On error, \-1 is returned, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .PP
 The
 .BR alphasort ()
diff --git a/man3/setenv.3 b/man3/setenv.3
index 40f15d1e4..2d61cda6d 100644
--- a/man3/setenv.3
+++ b/man3/setenv.3
@@ -107,7 +107,7 @@ and
 functions return zero on success,
 or \-1 on error, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/shm_open.3 b/man3/shm_open.3
index 7f18dc158..580e03cf6 100644
--- a/man3/shm_open.3
+++ b/man3/shm_open.3
@@ -178,7 +178,7 @@ returns 0 on success, or \-1 on error.
 .SH ERRORS
 On failure,
 .I errno
-is set to indicate the cause of the error.
+is set to indicate the error.
 Values which may appear in
 .I errno
 include the following:
diff --git a/man3/siginterrupt.3 b/man3/siginterrupt.3
index 79b7c153b..bd4bb3661 100644
--- a/man3/siginterrupt.3
+++ b/man3/siginterrupt.3
@@ -77,7 +77,7 @@ signal number
 .I sig
 is invalid, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/sigsetops.3 b/man3/sigsetops.3
index 6f3389029..4c0af1e2a 100644
--- a/man3/sigsetops.3
+++ b/man3/sigsetops.3
@@ -121,7 +121,7 @@ is not a member, and \-1 on error.
 .PP
 On error, these functions set
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/strdup.3 b/man3/strdup.3
index 8900a26d7..65ee22df9 100644
--- a/man3/strdup.3
+++ b/man3/strdup.3
@@ -109,7 +109,7 @@ function returns a pointer to the duplicated
 string.
 It returns NULL if insufficient memory was available, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B ENOMEM
diff --git a/man3/sysconf.3 b/man3/sysconf.3
index 8c256421d..05eda466c 100644
--- a/man3/sysconf.3
+++ b/man3/sysconf.3
@@ -330,7 +330,7 @@ is one of the following:
 .IP * 3
 On error, \-1 is returned and
 .I errno
-is set to indicate the cause of the error
+is set to indicate the error
 (for example,
 .BR EINVAL ,
 indicating that
diff --git a/man3/tempnam.3 b/man3/tempnam.3
index cb66c953a..1c450f375 100644
--- a/man3/tempnam.3
+++ b/man3/tempnam.3
@@ -102,7 +102,7 @@ On success, the
 function returns a pointer to a unique temporary filename.
 It returns NULL if a unique name cannot be generated, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B ENOMEM
diff --git a/man3/timegm.3 b/man3/timegm.3
index de0fdc634..7779e85cc 100644
--- a/man3/timegm.3
+++ b/man3/timegm.3
@@ -71,7 +71,7 @@ On error, they return the value
 .I (time_t)\ \-1
 and set
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .TP
 .B EOVERFLOW
diff --git a/man3/uselocale.3 b/man3/uselocale.3
index 2018646ef..a3007313b 100644
--- a/man3/uselocale.3
+++ b/man3/uselocale.3
@@ -81,7 +81,7 @@ On error, it returns
 .IR "(locale_t)\ 0" ,
 and sets
 .I errno
-to indicate the cause of the error.
+to indicate the error.
 .SH ERRORS
 .TP
 .B EINVAL
diff --git a/man3/usleep.3 b/man3/usleep.3
index 7eaeb820a..519c5f0f2 100644
--- a/man3/usleep.3
+++ b/man3/usleep.3
@@ -69,7 +69,7 @@ The
 function returns 0 on success.
 On error, \-1 is returned, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B EINTR
diff --git a/man3/wcsdup.3 b/man3/wcsdup.3
index 823cc18ba..a6e7a8328 100644
--- a/man3/wcsdup.3
+++ b/man3/wcsdup.3
@@ -56,7 +56,7 @@ On success,
 returns a pointer to the new wide-character string.
 On error, it returns NULL, with
 .I errno
-set to indicate the cause of the error.
+set to indicate the error.
 .SH ERRORS
 .TP
 .B ENOMEM