diff --git a/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts b/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts
index 54abd1f54..75f0c3fcb 100644
--- a/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts
+++ b/apps/red-ui/src/app/modules/shared-dossiers/services/file-assign.service.ts
@@ -81,6 +81,10 @@ export class FileAssignService {
             userId = eligibleUsersIds[0];
         }
 
+        if (targetStatus === WorkflowFileStatuses.UNDER_APPROVAL && eligibleUsersIds.length === 1 && !userId) {
+            userId = eligibleUsersIds[0];
+        }
+
         if (userId) {
             return this.#makeAssignFileRequest(userId, targetStatus, [file]);
         }
diff --git a/apps/red-ui/src/app/services/permissions.service.ts b/apps/red-ui/src/app/services/permissions.service.ts
index 4f3d6ba9b..2a9e80fbf 100644
--- a/apps/red-ui/src/app/services/permissions.service.ts
+++ b/apps/red-ui/src/app/services/permissions.service.ts
@@ -508,7 +508,7 @@ export class PermissionsService {
 
     #canAssignApprover(file: File, dossier: Dossier) {
         const fileStatesForApprover = file.isUnderReview || file.isUnderApproval || file.isApproved;
-        return fileStatesForApprover && dossier.hasApprovers && this.isApprover(dossier);
+        return fileStatesForApprover && dossier.hasApprovers && this.isDossierMember(dossier);
     }
 
     #canUnassignUser(file: File, dossier: Dossier) {
diff --git a/libs/red-domain/src/lib/dossiers/dossier.model.ts b/libs/red-domain/src/lib/dossiers/dossier.model.ts
index a4efaf53a..859694fd2 100644
--- a/libs/red-domain/src/lib/dossiers/dossier.model.ts
+++ b/libs/red-domain/src/lib/dossiers/dossier.model.ts
@@ -51,7 +51,7 @@ export class Dossier implements IDossier, IListable {
         this.watermarkId = dossier.watermarkId;
         this.previewWatermarkId = dossier.previewWatermarkId;
         this.archivedTime = dossier.archivedTime;
-        this.hasApprovers = !!this.approverIds && this.approverIds.length > 1;
+        this.hasApprovers = !!this.approverIds && this.approverIds.length >= 1;
 
         this.isSoftDeleted = this.softDeletedTime !== null;
         this.isArchived = this.archivedTime !== null;