diff --git a/res/drawable/option_border_custom.xml b/res/drawable/option_border_custom.xml
index 66a1bbb..648bc4f 100644
--- a/res/drawable/option_border_custom.xml
+++ b/res/drawable/option_border_custom.xml
@@ -18,7 +18,7 @@
     <item android:id="@android:id/mask">
         <shape android:shape="rectangle">
             <solid android:color="@android:color/white"/>
-            <corners android:radius="8dp" />
+            <corners android:radius="?android:dialogCornerRadius" />
         </shape>
     </item>
     <item android:drawable="@drawable/option_border_edge_custom" />
diff --git a/res/drawable/option_border_edge_custom.xml b/res/drawable/option_border_edge_custom.xml
index 767d484..1863c5d 100644
--- a/res/drawable/option_border_edge_custom.xml
+++ b/res/drawable/option_border_edge_custom.xml
@@ -20,7 +20,7 @@
             <stroke
                 android:color="@color/option_border_color"
                 android:width="@dimen/option_selected_border_width" />
-            <corners android:radius="8dp" />
+            <corners android:radius="?android:dialogCornerRadius" />
         </shape>
     </item>
     <item android:state_activated="false">
@@ -29,7 +29,7 @@
                 android:color="@color/black_24_alpha"
                 android:alpha="0.24"
                 android:width="@dimen/option_border_width" />
-            <corners android:radius="8dp" />
+            <corners android:radius="?android:dialogCornerRadius" />
         </shape>
     </item>
 </selector>