diff --git a/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/exercise-tracker.md b/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/exercise-tracker.md
index 9224459587..390154aa98 100644
--- a/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/exercise-tracker.md
+++ b/curriculum/challenges/english/05-back-end-development-and-apis/back-end-development-and-apis-projects/exercise-tracker.md
@@ -24,7 +24,7 @@ Exercise:
 
 ```js
 {
-  username: "fcc_test"
+  username: "fcc_test",
   description: "test",
   duration: 60,
   date: "Mon Jan 01 1990",