diff --git a/tests/test-check-code.t b/tests/test-check-code.t
--- a/tests/test-check-code.t
+++ b/tests/test-check-code.t
@@ -33,7 +33,7 @@ New errors are not allowed. Warnings are
   Skipping contrib/packaging/hgpackaging/wix.py it has no-che?k-code (glob)
   Skipping i18n/polib.py it has no-che?k-code (glob)
   Skipping mercurial/statprof.py it has no-che?k-code (glob)
-  Skipping tests/badserverext.py it has no-che?k-code (glob)
+  Skipping tests/testlib/badserverext.py it has no-che?k-code (glob)
 
 @commands in debugcommands.py should be in alphabetical order.
 
diff --git a/tests/test-http-bad-server.t b/tests/test-http-bad-server.t
--- a/tests/test-http-bad-server.t
+++ b/tests/test-http-bad-server.t
@@ -30,7 +30,7 @@ and because debugging partial responses 
 
   $ cat > .hg/hgrc << EOF
   > [extensions]
-  > badserver = $TESTDIR/badserverext.py
+  > badserver = $TESTDIR/testlib/badserverext.py
   > [server]
   > compressionengines = none
   > EOF
diff --git a/tests/badserverext.py b/tests/testlib/badserverext.py
rename from tests/badserverext.py
rename to tests/testlib/badserverext.py