diff --git a/project/src/controllers/QuestController.ts b/project/src/controllers/QuestController.ts
index c4d72fd4..41a25827 100644
--- a/project/src/controllers/QuestController.ts
+++ b/project/src/controllers/QuestController.ts
@@ -997,6 +997,8 @@ export class QuestController
         output: IItemEventRouterResponse,
     ): IItemEventRouterResponse
     {
-        return this.questHelper.failQuest(pmcData, request, sessionID, output);
+        this.questHelper.failQuest(pmcData, request, sessionID, output);
+
+        return output;
     }
 }
diff --git a/project/src/helpers/QuestHelper.ts b/project/src/helpers/QuestHelper.ts
index 3a212987..d6a607a5 100644
--- a/project/src/helpers/QuestHelper.ts
+++ b/project/src/helpers/QuestHelper.ts
@@ -677,14 +677,13 @@ export class QuestHelper
      * @param failRequest Fail quest request data
      * @param sessionID Session id
      * @param output Client output
-     * @returns Item event router response
      */
     public failQuest(
         pmcData: IPmcData,
         failRequest: IFailQuestRequestData,
         sessionID: string,
         output: IItemEventRouterResponse = null,
-    ): IItemEventRouterResponse
+    ): void
     {
         // Prepare response to send back to client
         if (!output)
@@ -716,8 +715,6 @@ export class QuestHelper
         }
 
         output.profileChanges[sessionID].quests.push(...this.failedUnlocked(failRequest.qid, sessionID));
-
-        return output;
     }
 
     /**