diff --git a/Bin/net40/SunnyUI.dll b/Bin/net40/SunnyUI.dll
index 07cfb7eb..8e6cbd76 100644
Binary files a/Bin/net40/SunnyUI.dll and b/Bin/net40/SunnyUI.dll differ
diff --git a/SunnyUI/Controls/UIPanel.cs b/SunnyUI/Controls/UIPanel.cs
index 18217bad..30ecdc84 100644
--- a/SunnyUI/Controls/UIPanel.cs
+++ b/SunnyUI/Controls/UIPanel.cs
@@ -691,5 +691,11 @@ namespace Sunny.UI
                 }
             }
         }
+
+        protected override void OnScroll(ScrollEventArgs se)
+        {
+            base.OnScroll(se);
+            if (AutoScroll) Invalidate();
+        }
     }
 }
\ No newline at end of file