diff --git a/F-Droid/res/values-v21/styles.xml b/F-Droid/res/values-v21/styles.xml
index 76b75bab0..01ec94137 100644
--- a/F-Droid/res/values-v21/styles.xml
+++ b/F-Droid/res/values-v21/styles.xml
@@ -3,6 +3,7 @@
 
     <style name="AppThemeDark" parent="AppBaseThemeDark">
         <!-- customizations that are not API-level specific go here. -->
+        <item name="android:alertDialogTheme">@style/AlertDialogThemeDark</item>
         <item name="android:colorEdgeEffect">@color/fdroid_blue</item>
         <item name="android:colorControlActivated">@color/fdroid_green</item>
         <item name="android:colorControlHighlight">@color/fdroid_green</item>
@@ -10,7 +11,8 @@
 
     <style name="AppThemeLight" parent="AppBaseThemeLight">
         <!-- customizations that are not API-level specific go here. -->
+        <item name="android:alertDialogTheme">@style/AlertDialogThemeLight</item>
         <item name="android:colorEdgeEffect">@color/fdroid_blue</item>
     </style>
 
-</resources>
\ No newline at end of file
+</resources>