diff --git a/EventListener/ParamConverterListener.php b/EventListener/ParamConverterListener.php
index f9bd858c..8da1d377 100644
--- a/EventListener/ParamConverterListener.php
+++ b/EventListener/ParamConverterListener.php
@@ -64,7 +64,7 @@ public function onKernelController(FilterControllerEvent $event)
 
         if (\is_array($controller)) {
             $r = new \ReflectionMethod($controller[0], $controller[1]);
-        } elseif (\is_object($controller) && \is_callable($controller, '__invoke')) {
+        } elseif (\is_object($controller) && \is_callable([$controller, '__invoke'])) {
             $r = new \ReflectionMethod($controller, '__invoke');
         } else {
             $r = new \ReflectionFunction($controller);