diff --git a/ChangeLog b/ChangeLog
index f4c9f98c2..d8746f075 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2002-07-20  Mike Kestner <mkestner@speakeasy.net>
+
+	* generator/SignalHandler.cs : pring unexpected key in exception.
+
 2002-07-20  Mike Kestner <mkestner@speakeasy.net>
 
 	* generator/Method.cs : beef up !Validate warnings
diff --git a/generator/SignalHandler.cs b/generator/SignalHandler.cs
index cf9935ee5..2d018f555 100644
--- a/generator/SignalHandler.cs
+++ b/generator/SignalHandler.cs
@@ -132,7 +132,7 @@ namespace GtkSharp.Generation {
 			sw.WriteLine(cbname + "(" + pinv + ", int key)");
 			sw.WriteLine("\t\t{");
 			sw.WriteLine("\t\t\tif (!_Instances.Contains(key))");
-			sw.WriteLine("\t\t\t\tthrow new Exception(\"Unexpected signal key\");");
+			sw.WriteLine("\t\t\t\tthrow new Exception(\"Unexpected signal key \" + key);");
 			sw.WriteLine();
 			sw.WriteLine("\t\t\t" + sname + " inst = (" + sname + ") _Instances[key];");
 			if ((s_ret == "void") && (parms.Count == 1)) {