diff --git a/lib/pangea/course_plans/courses/course_plan_room_extension.dart b/lib/pangea/course_plans/courses/course_plan_room_extension.dart
index cb9110a17..a1ef6f660 100644
--- a/lib/pangea/course_plans/courses/course_plan_room_extension.dart
+++ b/lib/pangea/course_plans/courses/course_plan_room_extension.dart
@@ -90,7 +90,7 @@ extension CoursePlanRoomExtension on Room {
         if (activity.imageURL != null)
           StateEvent(
             type: EventTypes.RoomAvatar,
-            content: {'url': activity.imageURL!},
+            content: {'url': activity.imageURL!.toString()},
           ),
         if (role != null)
           StateEvent(