diff --git a/tests/unit/dialog/dialog_common.js b/tests/unit/dialog/dialog_common.js
index d49f78a4b1..2c0e86b46c 100644
--- a/tests/unit/dialog/dialog_common.js
+++ b/tests/unit/dialog/dialog_common.js
@@ -23,7 +23,6 @@ TestHelpers.commonWidgetTests( "dialog", {
 		},
 		resizable: true,
 		show: null,
-		stack: true,
 		title: '',
 		width: 300,