diff --git a/src/nm-auth-manager.c b/src/nm-auth-manager.c
index d1b8d91e1d..441c971f56 100644
--- a/src/nm-auth-manager.c
+++ b/src/nm-auth-manager.c
@@ -353,7 +353,7 @@ static void
 _emit_changed_signal (NMAuthManager *self)
 {
 	_LOGD ("emit changed signal");
-	g_signal_emit_by_name (self, NM_AUTH_MANAGER_SIGNAL_CHANGED);
+	g_signal_emit (self, signals[CHANGED_SIGNAL], 0);
 }
 
 static void