diff --git a/bitbake/lib/bb/ui/hob.py b/bitbake/lib/bb/ui/hob.py
index 52788813c5..0f8fe8c2d6 100644
--- a/bitbake/lib/bb/ui/hob.py
+++ b/bitbake/lib/bb/ui/hob.py
@@ -420,7 +420,7 @@ class MainWindow (gtk.Window):
         label.show()
         response = dialog.run()
         dialog.destroy()
-        if not response == gtk.RESPONSE_YES:
+        if response == gtk.RESPONSE_YES:
             self.handler.cancel_build()
         return