diff --git a/src/Symfony/Component/HttpClient/Tests/Response/MockResponseTest.php b/src/Symfony/Component/HttpClient/Tests/Response/MockResponseTest.php
index a531da3535..b4a4a22083 100644
--- a/src/Symfony/Component/HttpClient/Tests/Response/MockResponseTest.php
+++ b/src/Symfony/Component/HttpClient/Tests/Response/MockResponseTest.php
@@ -41,12 +41,6 @@ class MockResponseTest extends TestCase
             'message' => 'Response body is empty.',
         ];
 
-        yield [
-            'content' => '{}',
-            'responseHeaders' => ['content-type' => 'plain/text'],
-            'message' => 'Response content-type is "plain/text" while a JSON-compatible one was expected for "https://example.com/file.json".',
-        ];
-
         yield [
             'content' => 'not json',
             'responseHeaders' => [],