diff --git a/Bin/net40/SunnyUI.Demo.exe b/Bin/net40/SunnyUI.Demo.exe
index 9078f78b..2e6ac8a5 100644
Binary files a/Bin/net40/SunnyUI.Demo.exe and b/Bin/net40/SunnyUI.Demo.exe differ
diff --git a/Bin/net40/SunnyUI.dll b/Bin/net40/SunnyUI.dll
index bcf7c767..34141f12 100644
Binary files a/Bin/net40/SunnyUI.dll and b/Bin/net40/SunnyUI.dll differ
diff --git a/SunnyUI/Charts/UIChart.cs b/SunnyUI/Charts/UIChart.cs
index 69302833..117b4bb5 100644
--- a/SunnyUI/Charts/UIChart.cs
+++ b/SunnyUI/Charts/UIChart.cs
@@ -189,7 +189,10 @@ namespace Sunny.UI
             base.OnFontChanged(e);
 
             if (tip != null)
+            {
+                tip.IsScaled = true;
                 tip.Font = this.DPIScaleFont(Font, TipsFontSize);
+            }
         }
 
         protected virtual void DrawOption(Graphics g)