diff --git a/lcl/include/canvas.inc b/lcl/include/canvas.inc
index 4e2113d7c7..fe67add0a4 100644
--- a/lcl/include/canvas.inc
+++ b/lcl/include/canvas.inc
@@ -168,14 +168,13 @@ procedure TCanvas.RealizeAntialiasing;
 begin
   if HandleAllocated then
   begin
-    Changing;
+    // do not call Changed, the content has not changed
     case FAntialiasingMode of
       amOn: WidgetSet.DCSetAntialiasing(FHandle, True);
       amOff: WidgetSet.DCSetAntialiasing(FHandle, False);
     else
       WidgetSet.DCSetAntialiasing(FHandle, Boolean(WidgetSet.GetLCLCapability(lcAntialiasingEnabledByDefault)) )
     end;
-    Changed;
   end;
 end;