diff --git a/tests/Composer/Test/Repository/Vcs/GitBitbucketDriverTest.php b/tests/Composer/Test/Repository/Vcs/GitBitbucketDriverTest.php
index 159fd6303..713d1f43d 100644
--- a/tests/Composer/Test/Repository/Vcs/GitBitbucketDriverTest.php
+++ b/tests/Composer/Test/Repository/Vcs/GitBitbucketDriverTest.php
@@ -224,7 +224,8 @@ class GitBitbucketDriverTest extends TestCase
             GitBitbucketDriver::supports($this->io, $this->config, 'https://bitbucket.org/user/repo.git')
         );
 
-        $this->assertTrue(
+        // should not be changed, see https://github.com/composer/composer/issues/9400
+        $this->assertFalse(
             GitBitbucketDriver::supports($this->io, $this->config, 'git@bitbucket.org:user/repo.git')
         );