diff --git a/Ink Canvas/Windows/PPTTimeCapsule.xaml b/Ink Canvas/Windows/PPTTimeCapsule.xaml
index b442cde9..0b474f62 100644
--- a/Ink Canvas/Windows/PPTTimeCapsule.xaml	
+++ b/Ink Canvas/Windows/PPTTimeCapsule.xaml	
@@ -107,7 +107,7 @@
     <Grid>
         <!-- 主胶囊容器 -->
         <Border x:Name="MainCapsule"
-                CornerRadius="15"
+                CornerRadius="8"
                 Padding="16,8"
                 Width="120"
                 Cursor="Hand"