diff --git a/man7/inode.7 b/man7/inode.7
index d58391f93..38ec3d1d1 100644
--- a/man7/inode.7
+++ b/man7/inode.7
@@ -319,11 +319,15 @@ and
 are provided if
 .BR _XOPEN_SOURCE
 is defined.
+
 The definition of
 .BR S_IFSOCK
-can also be exposed by defining
+can also be exposed either by defining
 .BR _XOPEN_SOURCE
-with a value of 500 or greater.
+with a value of 500 or greater or (since glibc 2.24) by defining both
+.BR _XOPEN_SOURCE
+and
+.BR _XOPEN_SOURCE_EXTENDED .
 
 The definition of
 .BR S_ISSOCK ()
@@ -333,9 +337,12 @@ is exposed if any of the following feature test macros is defined:
 .BR _DEFAULT_SOURCE
 (in glibc 2.20 and later),
 .BR _XOPEN_SOURCE
-with a value of 500 or greater, or
+with a value of 500 or greater,
 .BR _POSIX_C_SOURCE
-with a value of 200112L or greater.
+with a value of 200112L or greater, or (since glibc 2.24) by defining both
+.BR _XOPEN_SOURCE
+and
+.BR _XOPEN_SOURCE_EXTENDED .
 .PP
 The following mask values are defined for
 the file mode component of the