diff --git a/curriculum/test/utils/mongo-ids.js b/curriculum/test/utils/mongo-ids.js
index 83e95cce464..75888c90c84 100644
--- a/curriculum/test/utils/mongo-ids.js
+++ b/curriculum/test/utils/mongo-ids.js
@@ -1517,14 +1517,11 @@ const duplicatedProjectIds = [
   '5e44413e903586ffb414c94e',
 
   // Polygon area calculator
-  '5e444147903586ffb414c94f',
+  '5e444147903586ffb414c94f'
 
   /*** Back End JavaScript ***/
 
   /*** Legacy Only ***/
-
-  // Caesars Cipher
-  '56533eb9ac21ba0edf2244e2'
 ];
 
 class MongoIds {