diff --git a/Tests/Manual/CPAlertTest/AppController.j b/Tests/Manual/CPAlertTest/AppController.j
index 766dfe6fd..016f365e3 100644
--- a/Tests/Manual/CPAlertTest/AppController.j
+++ b/Tests/Manual/CPAlertTest/AppController.j
@@ -96,6 +96,7 @@
         [alert addButtonWithTitle:message[2]];
     if (message.length > 3)
         [alert addButtonWithTitle:message[3]];
+    [alert setTheme:(windowStyle === CPHUDBackgroundWindowMask) ? [CPTheme defaultHudTheme] : [CPTheme defaultTheme]];
     [alert setAlertStyle:variation[1]];
 
     if (windowStyle & CPDocModalWindowMask)