diff --git a/front/src/modules/activities/types/Activity.ts b/front/src/modules/activities/types/Activity.ts
index 4c5e9009b..1d75bae3c 100644
--- a/front/src/modules/activities/types/Activity.ts
+++ b/front/src/modules/activities/types/Activity.ts
@@ -15,9 +15,12 @@ export type Activity = {
   type: ActivityType;
   title: string;
   body: string;
-  author: WorkspaceMember;
+  author: Pick<WorkspaceMember, 'id' | 'firstName' | 'lastName' | 'avatarUrl'>;
   authorId: string;
-  assignee: WorkspaceMember | null;
+  assignee: Pick<
+    WorkspaceMember,
+    'id' | 'firstName' | 'lastName' | 'avatarUrl'
+  > | null;
   assigneeId: string | null;
   comments: Comment[];
 };
diff --git a/front/src/modules/activities/types/Comment.ts b/front/src/modules/activities/types/Comment.ts
index f826d7454..ec17484cf 100644
--- a/front/src/modules/activities/types/Comment.ts
+++ b/front/src/modules/activities/types/Comment.ts
@@ -6,5 +6,5 @@ export type Comment = {
   body: string;
   updatedAt: string;
   activityId: string;
-  author: WorkspaceMember;
+  author: Pick<WorkspaceMember, 'id' | 'firstName' | 'lastName' | 'avatarUrl'>;
 };