diff --git a/components/jvcllaz/run/JvHMI/jvdialbutton.pas b/components/jvcllaz/run/JvHMI/jvdialbutton.pas
index 964cf07a1..b6b7e9cb9 100644
--- a/components/jvcllaz/run/JvHMI/jvdialbutton.pas
+++ b/components/jvcllaz/run/JvHMI/jvdialbutton.pas
@@ -454,6 +454,7 @@ begin
   if APosition <> FPosition then
   begin
     FPosition := APosition;
+    BitmapNeeded;
     DrawPointer;
     lChanged := True;
   end;