diff --git a/DependencyInjection/JMSTranslationExtension.php b/DependencyInjection/JMSTranslationExtension.php
index f28b399c..4321cdca 100644
--- a/DependencyInjection/JMSTranslationExtension.php
+++ b/DependencyInjection/JMSTranslationExtension.php
@@ -41,7 +41,7 @@ public function load(array $configs, ContainerBuilder $container)
         $container->setParameter('jms_translation.locales', $config['locales']);
 
         foreach ($config['dumper'] as $option => $value) {
-            $container->setParameter("jms_translation.dumper.${option}", $value);
+            $container->setParameter('jms_translation.dumper.' . $option, $value);
         }
 
         $requests = [];
diff --git a/Tests/Twig/RemovingNodeVisitorTest.php b/Tests/Twig/RemovingNodeVisitorTest.php
index e2da3374..f44b3eb3 100644
--- a/Tests/Twig/RemovingNodeVisitorTest.php
+++ b/Tests/Twig/RemovingNodeVisitorTest.php
@@ -30,8 +30,8 @@ public function testRemovalWithSimpleTemplate(): void
 
         $templateSuffix = $isSF5 ? '_sf5' : '';
 
-        $expected = $this->parse("simple_template_compiled${templateSuffix}.html.twig");
-        $actual   = $this->parse("simple_template${templateSuffix}.html.twig");
+        $expected = $this->parse('simple_template_compiled' . $templateSuffix . '.html.twig');
+        $actual   = $this->parse('simple_template' . $templateSuffix . '.html.twig');
 
         $this->assertEquals($expected, $actual);
     }