diff --git a/ChangeLog b/ChangeLog
index 5279c03dd..b83a466a1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+1999-08-19  Michael Hanni  <mhanni@sprintmail.com>
+
+	* Source/NSObjCRuntime.m: patch from Tim Bissell to help in
+	debugging. (show which non-existant ivar you wanted.)
+
 Tue Aug  3 12:36:54 1999  Adam Fedor  <fedor@ultra.doc.com>
 
 	* Source/NSInvocation.m (-initWithTarget:selector:): Hack for
diff --git a/Source/NSObjCRuntime.m b/Source/NSObjCRuntime.m
index 2ae616431..8d2db097f 100644
--- a/Source/NSObjCRuntime.m
+++ b/Source/NSObjCRuntime.m
@@ -105,7 +105,7 @@ GSGetInstanceVariable(id obj, NSString *iVarName, void *data)
     }
   if (ivar == 0)
     {
-      NSLog(@"Attempt to get non-existent ivar");
+      NSLog(@"Attempt to get non-existent ivar '%s'", name);
       return NO;
     }
 
@@ -148,7 +148,7 @@ GSSetInstanceVariable(id obj, NSString *iVarName, const void *data)
     }
   if (ivar == 0)
     {
-      NSLog(@"Attempt to set non-existent ivar");
+      NSLog(@"Attempt to set non-existent ivar '%s'", name);
       return NO;
     }