diff --git a/source/Ox.UI/js/Window/Dialog.js b/source/Ox.UI/js/Window/Dialog.js
index c131481e..f3d27299 100644
--- a/source/Ox.UI/js/Window/Dialog.js
+++ b/source/Ox.UI/js/Window/Dialog.js
@@ -543,7 +543,7 @@ Ox.Dialog = function(options, self) {
         var buttonsLeft,
             buttonsRight,
             index = Ox.indexOf(self.options.buttons, Ox.isEmpty);
-        if (index) {
+        if (index > -1) {
             buttonsLeft = self.options.buttons.slice(0, index);
             buttonsRight = self.options.buttons.slice(index + 1);
         } else {