diff --git a/ChangeLog b/ChangeLog
index 35709b496..1a7c6cab0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2009-05-31 Fred Kiefer <FredKiefer@gmx.de>
+
+	* Source/NSApplication.m (detachDrawingThread:toTarget:withObject:): 
+	Replace a call to a now longer existing extension on NSInvocation
+	with the correct method calls.
+
 2009-05-31 Fred Kiefer <FredKiefer@gmx.de>
 
 	* Source/GSDisplayServer.m (+initialize,
diff --git a/Source/NSApplication.m b/Source/NSApplication.m
index a0ac4aa5d..e138a0874 100644
--- a/Source/NSApplication.m
+++ b/Source/NSApplication.m
@@ -736,9 +736,12 @@ static NSSize scaledIconSizeForSize(NSSize imageSize)
 {
   NSInvocation *inv;
 
-  // This uses a GNUstep extension on NSInvocation
-  inv = [[NSInvocation alloc] initWithTarget: target 
-			      selector: selector, argument];
+  inv = [[NSInvocation alloc] 
+            invocationWithMethodSignature: 
+                [target methodSignatureForSelector: selector]]; 
+  [inv setTarget: target];
+  [inv setSelector: selector];
+  [inv setArgument: argument atIndex: 2];
   [NSThread detachNewThreadSelector: @selector(_invokeWithAutoreleasePool:) 
 	    toTarget: self 
 	    withObject: inv];