1 files changed, 4 insertions, 1 deletions
diff --git a/src/su.c b/src/su.c
index 6bee0cb59..303a3c67d 100644
--- a/src/su.c
+++ b/src/su.c
@@ -118,8 +118,11 @@ uid_t getuid ();
 #endif
 #endif /* not _POSIX_VERSION */
 
-#ifdef _POSIX_SOURCE
+#ifndef HAVE_ENDGRENT
 #define endgrent()
+#endif
+
+#ifndef HAVE_ENDPWENT
 #define endpwent()
 #endif