diff --git a/Source/NSResponder.m b/Source/NSResponder.m
index b04528cf6..c867bd3b6 100644
--- a/Source/NSResponder.m
+++ b/Source/NSResponder.m
@@ -131,9 +131,22 @@
 - (void) doCommandBySelector:(SEL)aSelector
 {
   if (![self tryToPerform: aSelector with: nil])
-    NSBeep();
+    {
+      NSBeep();
+    }
 }
 
+- (void) insertText: (NSString*)aString
+{
+  if (_next_responder)
+    return [_next_responder insertText: aString];
+  else
+    {
+      NSBeep ();
+    }
+}
+
+
 /*
  * Forwarding event messages
  */