diff --git a/addons/web/static/src/webclient/actions/action_service.js b/addons/web/static/src/webclient/actions/action_service.js
index 11c29947430..6024a0fb82a 100644
--- a/addons/web/static/src/webclient/actions/action_service.js
+++ b/addons/web/static/src/webclient/actions/action_service.js
@@ -1459,9 +1459,6 @@ function makeActionManager(env) {
         get currentController() {
             return _getCurrentController();
         },
-        __legacy__isActionInStack(actionId) {
-            return controllerStack.find((c) => c.action.jsId === actionId);
-        },
     };
 }