diff --git a/CPF.Windows/GDIPlus/GDIPlusDrawingFactory.cs b/CPF.Windows/GDIPlus/GDIPlusDrawingFactory.cs
index 7ee6adf..e75c1a0 100644
--- a/CPF.Windows/GDIPlus/GDIPlusDrawingFactory.cs
+++ b/CPF.Windows/GDIPlus/GDIPlusDrawingFactory.cs
@@ -295,7 +295,7 @@ namespace CPF.GDIPlus
             {
                 if (h == -1)
                 {
-                    h = Font.Height;
+                    h = Font.Height + 0.01f;//有些字体用行高计算字符尺寸的时候会有问题，只能加0.01
                 }
                 return h;
             }