diff --git a/tests/Composer/Test/Repository/Vcs/GitLabDriverTest.php b/tests/Composer/Test/Repository/Vcs/GitLabDriverTest.php
index aeb885750..c5d1c8357 100644
--- a/tests/Composer/Test/Repository/Vcs/GitLabDriverTest.php
+++ b/tests/Composer/Test/Repository/Vcs/GitLabDriverTest.php
@@ -314,7 +314,7 @@ JSON;
             ->shouldBeCalledTimes(1)
         ;
         $this->remoteFilesystem->getLastHeaders()
-          ->willReturn([]);
+          ->willReturn(array());
 
         $driver->setRemoteFilesystem($this->remoteFilesystem->reveal());