diff --git a/core-bundle/tests/Crawl/Escargot/Subscriber/SearchIndexSubscriberTest.php b/core-bundle/tests/Crawl/Escargot/Subscriber/SearchIndexSubscriberTest.php
index ac563095ef9..945b98563c5 100644
--- a/core-bundle/tests/Crawl/Escargot/Subscriber/SearchIndexSubscriberTest.php
+++ b/core-bundle/tests/Crawl/Escargot/Subscriber/SearchIndexSubscriberTest.php
@@ -470,6 +470,12 @@ private function getResponse(bool $asHtml, int $statusCode = 200): ResponseInter
             ->willReturn($statusCode)
         ;
 
+        $response
+            ->method('getInfo')
+            ->with('response_headers')
+            ->willReturn([])
+        ;
+
         return $response;
     }