diff --git a/AppKit/CPDragServer.j b/AppKit/CPDragServer.j
index 9d64de97d..1e57c641f 100644
--- a/AppKit/CPDragServer.j
+++ b/AppKit/CPDragServer.j
@@ -251,7 +251,7 @@ var CPDraggingSource_draggedImage_movedTo_          = 1 << 0,
     return dragOperation;
 }
 
-- (void)draggingEndedInPlatformWindow:(CPPlatformWindow)aPlatformWindow globalLocation:(CGPoint)aLocation
+- (void)draggingEndedInPlatformWindow:(CPPlatformWindow)aPlatformWindow globalLocation:(CGPoint)aLocation operation:(CPDragOperation)anOperation
 {
     [_draggedView removeFromSuperview];
 
@@ -259,10 +259,10 @@ var CPDraggingSource_draggedImage_movedTo_          = 1 << 0,
         [_draggedWindow orderOut:self];
 
     if (_implementedDraggingSourceMethods & CPDraggingSource_draggedImage_endAt_operation_)
-        [_draggingSource draggedImage:[_draggedView image] endedAt:aLocation operation:NO];
+        [_draggingSource draggedImage:[_draggedView image] endedAt:aLocation operation:anOperation];
 
     else if (_implementedDraggingSourceMethods & CPDraggingSource_draggedView_endedAt_operation_)
-        [_draggingSource draggedView:_draggedView endedAt:aLocation operation:NO];
+        [_draggingSource draggedView:_draggedView endedAt:aLocation operation:anOperation];
 
     _isDragging = NO;
 }
@@ -386,7 +386,7 @@ var CPDraggingSource_draggedImage_movedTo_          = 1 << 0,
     if (type === CPLeftMouseUp)
     {
         [self performDragOperationInPlatformWindow:platformWindow];
-        [self draggingEndedInPlatformWindow:platformWindow globalLocation:platformWindowLocation];
+        [self draggingEndedInPlatformWindow:platformWindow globalLocation:platformWindowLocation operation:CPDragOperationNone];
 
         // Stop tracking events.
         return;
diff --git a/AppKit/Platform/DOM/CPPlatformWindow+DOM.j b/AppKit/Platform/DOM/CPPlatformWindow+DOM.j
index 84daf8745..75061618f 100644
--- a/AppKit/Platform/DOM/CPPlatformWindow+DOM.j
+++ b/AppKit/Platform/DOM/CPPlatformWindow+DOM.j
@@ -411,7 +411,20 @@ var supportsNativeDragAndDrop = [CPPlatform supportsDragAndDrop];
     }
 
     else if (type === "dragend")
-        [dragServer draggingEndedInPlatformWindow:self globalLocation:[CPPlatform isBrowser] ? location : _CGPointMake(aDOMEvent.screenX, aDOMEvent.screenY)];
+    {
+        var dropEffect = aDOMEvent.dataTransfer.dropEffect;
+
+        if (dropEffect === "move")
+            dragOperation = CPDragOperationMove;
+        else if (dropEffect === "copy")
+            dragOperation = CPDragOperationCopy;
+        else if (dropEffect === "link")
+            dragOperation = CPDragOperationLink;
+        else
+            dragOperation = CPDragOperationNone;
+
+        [dragServer draggingEndedInPlatformWindow:self globalLocation:[CPPlatform isBrowser] ? location : _CGPointMake(aDOMEvent.screenX, aDOMEvent.screenY) operation:dragOperation];
+    }
 
     else //if (type === "drop")
     {