diff --git a/man3/abs.3 b/man3/abs.3
index 0ea9711b8..ab21f9d34 100644
--- a/man3/abs.3
+++ b/man3/abs.3
@@ -108,12 +108,12 @@ GCC handles
 .BR abs ()
 and
 .BR labs ()
-as builtin functions.
+as built-in functions.
 GCC 3.0 also handles
 .BR llabs ()
 and
 .BR imaxabs ()
-as builtins.
+as built-ins.
 .SH "SEE ALSO"
 .BR cabs (3),
 .BR ceil (3),
diff --git a/man5/proc.5 b/man5/proc.5
index 60f812e51..d111b9931 100644
--- a/man5/proc.5
+++ b/man5/proc.5
@@ -108,7 +108,7 @@ cd /proc/20/cwd; /bin/pwd
 
 Note that the
 .I pwd
-command is often a shell builtin, and might
+command is often a shell built-in, and might
 not work properly.
 In bash, you may use pwd \-P.