--- nsswitch/libwbclient/wbc_idmap.c.old	2014-09-05 10:56:33.008901696 -0400
+++ nsswitch/libwbclient/wbc_idmap.c	2014-09-05 11:32:43.270085608 -0400
@@ -53,7 +53,11 @@
 
 	*puid = response.data.uid;
 
-	wbc_status = WBC_ERR_SUCCESS;
+	if (*puid != -1) {
+		wbc_status = WBC_ERR_SUCCESS;
+	} else {
+		wbc_status = WBC_ERR_INVALID_RESPONSE;
+	}
 
  done:
 	return wbc_status;