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diff --git a/man3/index.3 b/man3/index.3
index a47ce0dae..e8fc51cb7 100644
--- a/man3/index.3
+++ b/man3/index.3
@@ -18,16 +18,16 @@ Standard C library
.SH DESCRIPTION
.BR index ()
is identical to
-.BR strchr (3).
+.MR strchr 3 .
.P
.BR rindex ()
is identical to
-.BR strrchr (3).
+.MR strrchr 3 .
.P
Use
-.BR strchr (3)
+.MR strchr 3
and
-.BR strrchr (3)
+.MR strrchr 3
instead of these functions.
.SH STANDARDS
None.
@@ -35,10 +35,10 @@ None.
4.3BSD; marked as LEGACY in POSIX.1-2001.
Removed in POSIX.1-2008,
recommending
-.BR strchr (3)
+.MR strchr 3
and
-.BR strrchr (3)
+.MR strrchr 3
instead.
.SH SEE ALSO
-.BR strchr (3),
-.BR strrchr (3)
+.MR strchr 3 ,
+.MR strrchr 3