diff --git a/ChangeLog b/ChangeLog
index 133b98614..e3d45cd19 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2004-02-12  Fred Kiefer <FredKiefer@gmx.de>
+
+	* Source/NSOutlineView.m: (-draggingUpdated:) Applied patch from
+	Andreas Heppel (andreas.heppel@sysgo.com) to determine drag
+	operation correctly.
+	
 2004-02-11  Fred Kiefer <FredKiefer@gmx.de>
 
 	* Source/NSMatrix.m: (-setBackgroundColor:,
diff --git a/Source/NSOutlineView.m b/Source/NSOutlineView.m
index 6d532c0f6..e52a615f0 100644
--- a/Source/NSOutlineView.m
+++ b/Source/NSOutlineView.m
@@ -1364,7 +1364,8 @@ static NSImage *unexpandable  = nil;
   int levelBefore;
   int levelAfter;
   int level;
-
+  NSDragOperation dragOperation = [sender draggingSourceOperationMask];
+ 
   p = [self convertPoint: p fromView: nil];
   verticalQuarterPosition = 
     (p.y - _bounds.origin.y) / _rowHeight * 4.;
@@ -1465,14 +1466,10 @@ static NSImage *unexpandable  = nil;
       if ([_dataSource respondsToSelector: 
 			 @selector(outlineView:validateDrop:proposedItem:proposedChildIndex:)])
 	{
-	  //NSLog(@"currentDropLevel %d, currentDropRow %d",
-	  //currentDropLevel, currentDropRow);
-	  [_dataSource outlineView: self
-		       validateDrop: sender
-		       proposedItem: item
-		       proposedChildIndex: childIndex];
-	  //NSLog(@"currentDropLevel %d, currentDropRow %d", 
-	  //currentDropLevel, currentDropRow);
+	   dragOperation = [_dataSource outlineView: self
+					validateDrop: sender
+					proposedItem: item
+					proposedChildIndex: childIndex];
 	}
       
       if ((currentDropRow != oldDropRow) || (currentDropLevel != oldDropLevel))
@@ -1561,7 +1558,7 @@ static NSImage *unexpandable  = nil;
     }
 
 
-  return NSDragOperationCopy;
+  return dragOperation;
 }
 
 - (BOOL) performDragOperation: (id<NSDraggingInfo>)sender