diff --git a/unix/gtkwin.c b/unix/gtkwin.c
index 03ecc35a..311cf38a 100644
--- a/unix/gtkwin.c
+++ b/unix/gtkwin.c
@@ -1867,7 +1867,7 @@ void sys_cursor(void *frontend, int x, int y)
  */
 void do_beep(void *frontend, int mode)
 {
-    if (mode != BELL_VISUAL)
+    if (mode == BELL_DEFAULT)
 	gdk_beep();
 }