diff --git a/src/controllers/api/feedPrinceController.ts b/src/controllers/api/feedPrinceController.ts
index 67fd07db..8c6bde17 100644
--- a/src/controllers/api/feedPrinceController.ts
+++ b/src/controllers/api/feedPrinceController.ts
@@ -3,6 +3,7 @@ import { getAccountIdForRequest } from "../../services/loginService.ts";
 import { addMiscItem, getInventory } from "../../services/inventoryService.ts";
 import { getJSONfromString } from "../../helpers/stringHelpers.ts";
 import { logger } from "../../utils/logger.ts";
+import type { IInventoryChanges } from "../../types/purchaseTypes.ts";
 
 export const feedPrinceController: RequestHandler = async (req, res) => {
     const accountId = await getAccountIdForRequest(req);
@@ -15,7 +16,7 @@ export const feedPrinceController: RequestHandler = async (req, res) => {
                 FeedLevel: 0,
                 JournalEntries: []
             };
-            const InventoryChanges = {};
+            const InventoryChanges: IInventoryChanges = {};
             inventory.NokkoColony.FeedLevel += payload.Amount;
             if (
                 (!inventory.NodeIntrosCompleted.includes("CompletedVision1") && inventory.NokkoColony.FeedLevel > 20) ||
@@ -25,7 +26,7 @@ export const feedPrinceController: RequestHandler = async (req, res) => {
                     FeedSucceeded: false,
                     FeedLevel: inventory.NokkoColony.FeedLevel - payload.Amount,
                     InventoryChanges
-                });
+                } satisfies IFeedPrinceResponse);
             } else {
                 addMiscItem(
                     inventory,
@@ -38,7 +39,7 @@ export const feedPrinceController: RequestHandler = async (req, res) => {
                     FeedSucceeded: true,
                     FeedLevel: inventory.NokkoColony.FeedLevel,
                     InventoryChanges
-                });
+                } satisfies IFeedPrinceResponse);
             }
             break;
         }
@@ -53,3 +54,9 @@ interface IFeedPrinceRequest {
     Mode: string; // r
     Amount: number;
 }
+
+interface IFeedPrinceResponse {
+    FeedSucceeded: boolean;
+    FeedLevel: number;
+    InventoryChanges: IInventoryChanges;
+}