diff --git a/wo/cli/plugins/stack.py b/wo/cli/plugins/stack.py
index eee1e0b..1f1acc2 100644
--- a/wo/cli/plugins/stack.py
+++ b/wo/cli/plugins/stack.py
@@ -997,7 +997,7 @@ class WOStackController(CementBaseController):
 
 def load(app):
     # register the plugin class.. this only happens if the plugin is enabled
-    handler.register(WOStackController)
+    app.handler.register(WOStackController)
     handler.register(WOStackStatusController)
     handler.register(WOStackMigrateController)
     handler.register(WOStackUpgradeController)