diff --git a/app/src/main/res/values/themes.xml b/app/src/main/res/values/themes.xml
index 470ea305..07dd828d 100644
--- a/app/src/main/res/values/themes.xml
+++ b/app/src/main/res/values/themes.xml
@@ -102,7 +102,7 @@
 
     <style name="BannerShapeAppearance">
         <item name="cornerFamily">rounded</item>
-        <item name="cornerSize">8dp</item>
+        <item name="cornerSize">0dp</item>
     </style>
 
     <!-- Full-screen dialog style for Material 3 compliance -->