diff --git a/src/Resources/Styles.axaml b/src/Resources/Styles.axaml
index 79479272..0af9d9e8 100644
--- a/src/Resources/Styles.axaml
+++ b/src/Resources/Styles.axaml
@@ -143,6 +143,7 @@
 
   <Style Selector="Window.custom_window_frame[WindowState=Maximized] /template/ Border#PART_ContentRoot">
     <Setter Property="BorderThickness" Value="0"/>
+    <Setter Property="CornerRadius" Value="0"/>
   </Style>
 
   <Style Selector="Window.custom_window_frame[WindowState=Maximized] /template/ Border.resize_border">