diff --git a/packages/pyright-internal/src/tests/languageServer.test.ts b/packages/pyright-internal/src/tests/languageServer.test.ts
index b65b57720..99f0117b5 100644
--- a/packages/pyright-internal/src/tests/languageServer.test.ts
+++ b/packages/pyright-internal/src/tests/languageServer.test.ts
@@ -777,7 +777,7 @@ describe(`Basic language server tests`, () => {
                 const result = await serverInfo.connection.sendRequest(
                     WillRenameFilesRequest.type,
                     {
-                        files: [{ oldUri: 'file:///src/foo/bar', newUri: 'file:///src/foo/bar2' }],
+                        files: [{ oldUri: marker.fileUri.toString(), newUri: 'file:///src/foo/bar2.py' }],
                     },
                     CancellationToken.None
                 );