diff --git a/lib/libc/gen/getnetgrent.c b/lib/libc/gen/getnetgrent.c
index 04e2e882b515..25ec5214a701 100644
--- a/lib/libc/gen/getnetgrent.c
+++ b/lib/libc/gen/getnetgrent.c
@@ -273,6 +273,7 @@ endnetgrent(void)
 		free((char *)ogp);
 	}
 	grouphead.gr = (struct netgrp *)0;
+	nextgrp = (struct netgrp *)0;
 #ifdef YP
 	_netgr_yp_enabled = 0;
 #endif