diff --git a/man2/chmod.2 b/man2/chmod.2
index 46fd986af..7f5e276ea 100644
--- a/man2/chmod.2
+++ b/man2/chmod.2
@@ -36,7 +36,7 @@ chmod, fchmod \- change permissions of a file
 .sp
 .BI "int chmod(const char *" path ", mode_t " mode );
 .br
-.BI "int fchmod(int " fildes ", mode_t " mode );
+.BI "int fchmod(int " fd ", mode_t " mode );
 .sp
 .in -4n
 Feature Test Macro Requirements for glibc (see
@@ -49,7 +49,7 @@ _BSD_SOURCE || _XOPEN_SOURCE\ >=\ 500
 The mode of the file given by
 .I path
 or referenced by
-.I fildes
+.I fd
 is changed.
 
 Modes are specified by
@@ -180,7 +180,7 @@ are listed below:
 .TP
 .B EBADF
 The file descriptor
-.I fildes
+.I fd
 is not valid.
 .TP
 .B EIO
diff --git a/man2/lseek.2 b/man2/lseek.2
index b22a4f5c7..36894fb2e 100644
--- a/man2/lseek.2
+++ b/man2/lseek.2
@@ -48,13 +48,13 @@ lseek \- reposition read/write file offset
 .br
 .B #include <unistd.h>
 .sp
-.BI "off_t lseek(int " fildes ", off_t " offset ", int " whence );
+.BI "off_t lseek(int " fd ", off_t " offset ", int " whence );
 .SH DESCRIPTION
 The
 .BR lseek ()
 function repositions the offset of the open file associated with the
 file descriptor
-.I fildes
+.I fd
 to the argument
 .I offset
 according to the directive
@@ -94,7 +94,7 @@ is set to indicate the error.
 .SH ERRORS
 .TP
 .B EBADF
-.I fildes
+.I fd
 is not an open file descriptor.
 .TP
 .B EINVAL
@@ -114,7 +114,7 @@ The resulting file offset cannot be represented in an
 .IR off_t .
 .TP
 .B ESPIPE
-.I fildes
+.I fd
 is associated with a pipe, socket, or FIFO.
 .SH "CONFORMING TO"
 SVr4, 4.3BSD, POSIX.1-2001.
diff --git a/man3/fopen.3 b/man3/fopen.3
index 742fb1353..3351463f0 100644
--- a/man3/fopen.3
+++ b/man3/fopen.3
@@ -48,7 +48,7 @@ fopen, fdopen, freopen \- stream open functions
 .sp
 .BI "FILE *fopen(const char *" path ", const char *" mode );
 
-.BI "FILE *fdopen(int " fildes ", const char *" mode );
+.BI "FILE *fdopen(int " fd ", const char *" mode );
 
 .BI "FILE *freopen(const char *" path ", const char *" mode ", FILE *" stream );
 .fi
@@ -148,14 +148,14 @@ call.
 The
 .BR fdopen ()
 function associates a stream with the existing file descriptor,
-.IR fildes .
+.IR fd .
 The
 .I mode
 of the stream (one of the values "r", "r+", "w", "w+", "a", "a+")
 must be compatible with the mode of the file descriptor.
 The file position indicator of the new stream is set to that
 belonging to
-.IR fildes ,
+.IR fd ,
 and the error and end-of-file indicators are cleared.
 Modes "w" or "w+" do not cause truncation of the file.
 The file descriptor is not dup'ed, and will be closed when
diff --git a/man7/feature_test_macros.7 b/man7/feature_test_macros.7
index 45b95767a..f5c2fbf62 100644
--- a/man7/feature_test_macros.7
+++ b/man7/feature_test_macros.7
@@ -60,7 +60,7 @@ manual page):
 .sp
 .BI "int chmod(const char *" path ", mode_t " mode );
 .br
-.BI "int fchmod(int " fildes ", mode_t " mode );
+.BI "int fchmod(int " fd ", mode_t " mode );
 .sp
 .in -4n
 Feature Test Macro Requirements for glibc (see