1 files changed, 2 insertions, 0 deletions
diff --git a/grp/grp.h b/grp/grp.h
index 3e2bd05db4..164bdd78a9 100644
--- a/grp/grp.h
+++ b/grp/grp.h
@@ -105,6 +105,8 @@ extern struct group *getgrnam __P ((__const char *__name));
    POSIX people would choose.  */
 
 #if defined(__USE_SVID) || defined (__USE_BSD) || defined(__USE_XOPEN_EXTENDED)
+extern int __getgrent_r __P ((struct group *__resultbuf, char *buffer,
+			      size_t __buflen, struct group **__result));
 extern int getgrent_r __P ((struct group *__resultbuf, char *buffer,
 			    size_t __buflen, struct group **__result));
 #endif