diff --git a/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php b/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php
index 516dae38f3bebb60935df6b4e053d4aa0b8cd5da..f348b0705b600a0115330f9d841bc9de7fc9bfc1 100644
--- a/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php
+++ b/core/tests/Drupal/Tests/Component/DependencyInjection/ContainerTest.php
@@ -434,7 +434,7 @@ public function testGetForSyntheticServiceWithException() {
    * @covers ::createService
    */
   public function testGetWithFileInclude() {
-    $file_service = $this->container->get('container_test_file_service_test');
+    $this->container->get('container_test_file_service_test');
     $this->assertTrue(function_exists('container_test_file_service_test_service_function'));
     $this->assertEquals('Hello Container', container_test_file_service_test_service_function());
   }