diff --git a/src/Symfony/Component/ErrorRenderer/DependencyInjection/ErrorRendererPass.php b/src/Symfony/Component/ErrorRenderer/DependencyInjection/ErrorRendererPass.php
index aa502efac2f29..34c970adca6ac 100644
--- a/src/Symfony/Component/ErrorRenderer/DependencyInjection/ErrorRendererPass.php
+++ b/src/Symfony/Component/ErrorRenderer/DependencyInjection/ErrorRendererPass.php
@@ -40,23 +40,22 @@ public function process(ContainerBuilder $container)
             return;
         }
 
-        $renderers = $registered = [];
+        $renderers = [];
         foreach ($container->findTaggedServiceIds($this->rendererTag, true) as $serviceId => $tags) {
             /** @var ErrorRendererInterface $class */
             $class = $container->getDefinition($serviceId)->getClass();
 
             foreach ($tags as $tag) {
                 $format = $tag['format'] ?? $class::getFormat();
-                if (!isset($registered[$format])) {
-                    $priority = $tag['priority'] ?? 0;
+                $priority = $tag['priority'] ?? 0;
+                if (!isset($renderers[$priority][$format])) {
                     $renderers[$priority][$format] = new Reference($serviceId);
-                    $registered[$format] = true;
                 }
             }
         }
 
         if ($renderers) {
-            krsort($renderers);
+            ksort($renderers);
             $renderers = array_merge(...$renderers);
         }
 
diff --git a/src/Symfony/Component/ErrorRenderer/Tests/DependencyInjection/ErrorRendererPassTest.php b/src/Symfony/Component/ErrorRenderer/Tests/DependencyInjection/ErrorRendererPassTest.php
index 7fad3a5631bb8..e69fd860b85d8 100644
--- a/src/Symfony/Component/ErrorRenderer/Tests/DependencyInjection/ErrorRendererPassTest.php
+++ b/src/Symfony/Component/ErrorRenderer/Tests/DependencyInjection/ErrorRendererPassTest.php
@@ -48,4 +48,20 @@ public function testProcess()
         ];
         $this->assertEquals($expected, $serviceLocatorDefinition->getArgument(0));
     }
+
+    public function testServicesAreOrderedAccordingToPriority()
+    {
+        $container = new ContainerBuilder();
+        $definition = $container->register('error_renderer')->setArguments([null]);
+        $container->register('r2')->addTag('error_renderer.renderer', ['format' => 'json', 'priority' => 100]);
+        $container->register('r1')->addTag('error_renderer.renderer', ['format' => 'json', 'priority' => 200]);
+        $container->register('r3')->addTag('error_renderer.renderer', ['format' => 'json']);
+        (new ErrorRendererPass())->process($container);
+
+        $expected = [
+            'json' => new ServiceClosureArgument(new Reference('r1')),
+        ];
+        $serviceLocatorDefinition = $container->getDefinition((string) $definition->getArgument(0));
+        $this->assertEquals($expected, $serviceLocatorDefinition->getArgument(0));
+    }
 }