diff --git a/src/users/services/jobs.service.ts b/src/users/services/jobs.service.ts
index 0ced5c6e3320c028b1f088b9161c2c66369bdab8..2919c8818281e1fa247860d9762e947ca3a5584c 100644
--- a/src/users/services/jobs.service.ts
+++ b/src/users/services/jobs.service.ts
@@ -149,7 +149,7 @@ export class JobsService {
 
   public getJobsGroupsAttachedJobs(jobsGroupId: string): Promise<JobDocument[]> {
     this.logger.debug(`getJobsGroupsAttachedJobs: ${jobsGroupId}`);
-    return this.jobModel.find({ jobsGroup: jobsGroupId.toString() }).exec();
+    return this.jobModel.find({ jobsGroup: jobsGroupId }).exec();
   }
 
   public isConseillerNumerique(jobId: Types.ObjectId) {
diff --git a/src/users/services/users.service.ts b/src/users/services/users.service.ts
index abdbc5f4ca472453329351dead90509bb02c62a4..4c6f1ce0204c64c0a61acffd07bf2b3faecd3a40 100644
--- a/src/users/services/users.service.ts
+++ b/src/users/services/users.service.ts
@@ -456,11 +456,11 @@ export class UsersService {
   }
 
   public getJobAttachedUsers(jobId: JobDocument): Promise<IUser[]> {
-    return this.userModel.find({ job: jobId._id.toString() }).select('-password -job').exec();
+    return this.userModel.find({ job: jobId._id }).select('-password -job').exec();
   }
 
   public getEmployerAttachedUsers(employerId: EmployerDocument): Promise<IUser[]> {
-    return this.userModel.find({ employer: employerId._id.toString() }).select('-password -employer').exec();
+    return this.userModel.find({ employer: employerId._id }).select('-password -employer').exec();
   }
 
   public async populateJobsWithUsers(jobs: JobDocument[]) {