diff --git a/src/feedback/models/feedbackManager.ts b/src/feedback/models/feedbackManager.ts
index 0cc40d6..78b9494 100644
--- a/src/feedback/models/feedbackManager.ts
+++ b/src/feedback/models/feedbackManager.ts
@@ -19,7 +19,8 @@ export class FeedbackManager {
   public async createFeedback(feedback: IFeedbackModel, apiKey: string): Promise<FeedbackResponse> {
     const requestId = feedback.request_id;
     const userId = feedback.user_id;
-    const userValidation = this.config.get<string[]>('application.userValidation');
+    const raw = this.config.get<string | string[]>('application.userValidation');
+    const userValidation = Array.isArray(raw) ? raw : (JSON.parse(raw) as string[]);
     const ttl = this.config.get<number>('redis.ttl');
     const prefix = this.config.has('redis.prefix') ? this.config.get<string>('redis.prefix') : undefined;