diff --git a/src/Forms/FormRequestHandler.php b/src/Forms/FormRequestHandler.php
index 835b0762c..2aa0289e2 100644
--- a/src/Forms/FormRequestHandler.php
+++ b/src/Forms/FormRequestHandler.php
@@ -260,7 +260,7 @@ class FormRequestHandler extends RequestHandler
             );
         }
 
-        return $this->httpError(404);
+        return $this->httpError(404, "Could not find a suitable form-action callback function");
     }
 
     /**