diff --git a/curriculum/schema/challenge-schema.js b/curriculum/schema/challenge-schema.js
index 40cf121cc4d..8b49f0e00b5 100644
--- a/curriculum/schema/challenge-schema.js
+++ b/curriculum/schema/challenge-schema.js
@@ -174,7 +174,8 @@ const schema = Joi.object().keys({
       challengeTypes.step,
       challengeTypes.video,
       challengeTypes.multipleChoice,
-      challengeTypes.fillInTheBlank
+      challengeTypes.fillInTheBlank,
+      challengeTypes.review
     ],
     then: Joi.string().allow(''),
     otherwise: Joi.string().required()