diff --git a/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/activity/[activityid]/page.tsx b/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/activity/[activityid]/page.tsx
index 92591a79..7a6fffa7 100644
--- a/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/activity/[activityid]/page.tsx
+++ b/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/activity/[activityid]/page.tsx
@@ -57,7 +57,7 @@ function ActivityPage(params: any) {
                         <ToolTip sideOffset={-5} slateBlack content={activity.name} key={activity.id}>
                           <Link href={getUriWithOrg(orgslug, "") + `/course/${courseid}/activity/${activity.id.replace("activity_", "")}`}>
                             <ChapterIndicator
-                              done={course.trail.activities_marked_complete.includes(activity.id) && course.trail.status == "ongoing"}
+                              done={course.trail.activities_marked_complete && course.trail.activities_marked_complete.includes(activity.id) && course.trail.status == "ongoing"}
                               active={"activity_" + activityid === activity.id ? true : false} key={activity.id}
                             />
                           </Link>
diff --git a/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/page.tsx b/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/page.tsx
index b896e1da..37f0ce0e 100644
--- a/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/page.tsx
+++ b/front/app/_orgs/[orgslug]/(withmenu)/course/[courseid]/page.tsx
@@ -62,7 +62,7 @@ const CourseIdPage = (params: any) => {
                         <ToolTip sideOffset={-18} slateBlack content={activity.name}>
                           <Link href={getUriWithOrg(orgslug, "") + `/course/${courseid}/activity/${activity.id.replace("activity_", "")}`}>
                           <CourseIndicator
-                              done={course.trail.activities_marked_complete.includes(activity.id) && course.trail.status == "ongoing"}
+                              done={course.trail.activities_marked_complete && course.trail.activities_marked_complete.includes(activity.id) && course.trail.status == "ongoing"}
                              />
                           </Link>
                         </ToolTip>