diff --git a/packages/react-app/src/data/challenges.js b/packages/react-app/src/data/challenges.js
index 5668b4d..1467873 100644
--- a/packages/react-app/src/data/challenges.js
+++ b/packages/react-app/src/data/challenges.js
@@ -122,4 +122,4 @@ export const challengeInfo = {
 const githubChallengesRepoBaseRawUrl = "https://raw.githubusercontent.com/scaffold-eth/se-2-challenges";
 
 export const getGithubChallengeReadmeUrl = challengeId =>
-  `${githubChallengesRepoBaseRawUrl}/${challengeInfo[challengeId].branchName}/README.md`;
+  `${githubChallengesRepoBaseRawUrl}/${challengeInfo[challengeId].branchName}--extension/README.md`;