symfony
diff --git a/‎src/Symfony/Component/HttpKernel/Controller/ArgumentResolver/ServiceValueResolver.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpKernel/Controller/ArgumentResolver/ServiceValueResolver.php
+22Lines changed: 22 additions & 0 deletions b/‎src/Symfony/Component/HttpKernel/Controller/ArgumentResolver/ServiceValueResolver.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpKernel/Controller/ArgumentResolver/ServiceValueResolver.php
+22Lines changed: 22 additions & 0 deletions
diff --git a/‎src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
+18Lines changed: 18 additions & 0 deletions b/‎src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/HttpKernel/Tests/Controller/ArgumentResolver/ServiceValueResolverTest.php
+18Lines changed: 18 additions & 0 deletions
@@ -47,6 +47,8 @@ public function supports(Request $request, ArgumentMetadata $argument)
             $controller = ltrim($controller, '\\');
         }
 
+        $controller = $this->normalizeMethod($controller);
+
         return $this->container->has($controller) && $this->container->get($controller)->has($argument->getName());
     }
 
@@ -63,6 +65,26 @@ public function resolve(Request $request, ArgumentMetadata $argument)
             $controller = ltrim($controller, '\\');
         }
 
+        $controller = $this->normalizeMethod($controller);
+
         yield $this->container->get($controller)->get($argument->getName());
     }
+
+    private function normalizeMethod(string $controller): string
+    {
+        $controllerSplitted = preg_split('/::|:/', $controller);
+        $methodKey = $this->getMethodKey($controllerSplitted);
+        $controllerSplitted[$methodKey] = strtolower($controllerSplitted[$methodKey]);
+
+        return implode('::', $controllerSplitted);
+    }
+
+    private function getMethodKey(array $controllerSplitted)
+    {
+        if (!\is_array($controllerSplitted) || empty($controllerSplitted)) {
+            return null;
+        }
+
+        return array_keys($controllerSplitted)[\count($controllerSplitted) - 1];
+    }
 }
@@ -66,6 +66,24 @@ public function testExistingControllerWithATrailingBackSlash()
         $this->assertYieldEquals(array(new DummyService()), $resolver->resolve($request, $argument));
     }
 
+    public function testExistingControllerWithMethodNameStartUppercase()
+    {
+        $resolver = new ServiceValueResolver(new ServiceLocator(array(
+            'App\\Controller\\Mine::method' => function () {
+                return new ServiceLocator(array(
+                    'dummy' => function () {
+                        return new DummyService();
+                    },
+                ));
+            },
+        )));
+        $request = $this->requestWithAttributes(array('_controller' => 'App\\Controller\\Mine::Method'));
+        $argument = new ArgumentMetadata('dummy', DummyService::class, false, false, null);
+
+        $this->assertTrue($resolver->supports($request, $argument));
+        $this->assertYieldEquals(array(new DummyService()), $resolver->resolve($request, $argument));
+    }
+
     public function testControllerNameIsAnArray()
     {
         $resolver = new ServiceValueResolver(new ServiceLocator(array(