diff --git a/apps/portal/src/app/features/vessel-transfer/mock.ts b/apps/portal/src/app/features/vessel-transfer/mock.ts
index 6281c923e..094723c6d 100644
--- a/apps/portal/src/app/features/vessel-transfer/mock.ts
+++ b/apps/portal/src/app/features/vessel-transfer/mock.ts
@@ -1,5 +1,7 @@
 // ponytail: in-memory mock array, resets on reload — swap for RTK Query endpoint when backend lands.
 
+import type { UploadFileInfo } from '@ema-platform/api';
+
 export interface Vessel {
   id: string;
   name: string;
@@ -44,7 +46,7 @@ export interface TransferRequest {
   submitted: string;
   approvedOn?: string;
   rejectionReason?: string;
-  documentFileInfo?: unknown;
+  documentFileInfo?: UploadFileInfo;
 }
 
 export const MOCK_REQUESTS: TransferRequest[] = [
diff --git a/libs/api/src/lib/file-upload/index.ts b/libs/api/src/lib/file-upload/index.ts
index ff7b2c2be..cdf8b10ef 100644
--- a/libs/api/src/lib/file-upload/index.ts
+++ b/libs/api/src/lib/file-upload/index.ts
@@ -2,9 +2,17 @@ import { useCallback, useState } from 'react';
 import { baseApi } from '../base-api';
 import { resolveTokenFromStorage } from '../session';
 
-export interface UploadKeyResponse<TFileInfo = unknown> {
+export interface UploadFileInfo {
+  bucket: string;
+  fileName: string;
+  contentType: string;
+  originalname: string;
+  size: number;
+}
+
+export interface UploadKeyResponse {
+  fileInfo: UploadFileInfo;
   presigned: string;
-  fileInfo: TFileInfo;
 }
 
 const fileUploadApi = baseApi.injectEndpoints({
@@ -65,12 +73,12 @@ export function useDocumentUpload() {
   const [isUploading, setIsUploading] = useState(false);
 
   const upload = useCallback(
-    async <TFileInfo = unknown>(file: File, endpoint: string): Promise<UploadKeyResponse<TFileInfo>> => {
+    async (file: File, endpoint: string): Promise<UploadKeyResponse> => {
       setIsUploading(true);
       try {
         const { presigned, fileInfo } = await getFileUploadKey({ endpoint, file }).unwrap();
         await uploadToPresigned(file, presigned);
-        return { presigned, fileInfo: fileInfo as TFileInfo };
+        return { presigned, fileInfo };
       } finally {
         setIsUploading(false);
       }