diff --git a/man3/getmntent.3 b/man3/getmntent.3
index 57f60d832..6e46ba56d 100644
--- a/man3/getmntent.3
+++ b/man3/getmntent.3
@@ -239,7 +239,8 @@ T}	Thread safety	MT-Safe locale
 The nonreentrant functions are from SunOS 4.1.3.
 A routine
 .BR getmntent_r ()
-was introduced in HP-UX 10, but it returns an int.
+was introduced in HP-UX 10, but it returns an
+.IR int .
 The prototype shown above is glibc-only.
 .SH NOTES
 System V also has a