diff --git a/app/Controllers/AuthController.php b/app/Controllers/AuthController.php
index 9160453a01ebd7581e30721dc0e2bc34e6a4da17..72db8009ace22d3972417eecb7995d83087ed7f5 100644
--- a/app/Controllers/AuthController.php
+++ b/app/Controllers/AuthController.php
@@ -181,7 +181,7 @@ class AuthController extends MythAuthController
 
         helper('auth');
 
-        set_interact_as_actor($this->request->getPost('actor_id'));
+        set_interact_as_actor((int) $this->request->getPost('actor_id'));
 
         return redirect()->back();
     }