symfony
diff --git a/‎src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
+2-2Lines changed: 2 additions & 2 deletions b/‎src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/EventDispatcher/Debug/WrappedListener.php
+2-2Lines changed: 2 additions & 2 deletions
diff --git a/‎src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
+2-1Lines changed: 2 additions & 1 deletion b/‎src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/EventDispatcher/Tests/Debug/WrappedListenerTest.php
+2-1Lines changed: 2 additions & 1 deletion
@@ -41,7 +41,7 @@ class WrappedListener
     public function __construct($listener, ?string $name, Stopwatch $stopwatch, EventDispatcherInterface $dispatcher = null)
     {
         $this->listener = $listener;
-        $this->optimizedListener = $listener instanceof \Closure ? $listener : \Closure::fromCallable($listener);
+        $this->optimizedListener = $listener instanceof \Closure ? $listener : (\is_callable($listener) ? \Closure::fromCallable($listener) : null);
         $this->stopwatch = $stopwatch;
         $this->dispatcher = $dispatcher;
         $this->called = false;
@@ -123,7 +123,7 @@ public function __invoke(Event $event, $eventName, EventDispatcherInterface $dis
 
         $e = $this->stopwatch->start($this->name, 'event_listener');
 
-        ($this->optimizedListener)($event, $eventName, $dispatcher);
+        ($this->optimizedListener ?? $this->listener)($event, $eventName, $dispatcher);
 
         if ($e->isStarted()) {
             $e->stop();
 
@@ -21,7 +21,7 @@ class WrappedListenerTest extends TestCase
     /**
      * @dataProvider provideListenersToDescribe
      */
-    public function testListenerDescription(callable $listener, $expected)
+    public function testListenerDescription($listener, $expected)
     {
         $wrappedListener = new WrappedListener($listener, null, $this->getMockBuilder(Stopwatch::class)->getMock(), $this->getMockBuilder(EventDispatcherInterface::class)->getMock());
 
@@ -34,6 +34,7 @@ public function provideListenersToDescribe()
             [new FooListener(), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::__invoke'],
             [[new FooListener(), 'listen'], 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'],
             [['Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'listenStatic'], 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listenStatic'],
+            [['Symfony\Component\EventDispatcher\Tests\Debug\FooListener', 'invalidMethod'], 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::invalidMethod'],
             ['var_dump', 'var_dump'],
             [function () {}, 'closure'],
             [\Closure::fromCallable([new FooListener(), 'listen']), 'Symfony\Component\EventDispatcher\Tests\Debug\FooListener::listen'],