diff --git a/docs/docs/guides/input/file-params.md b/docs/docs/guides/input/file-params.md
index d387e93f7..54e342944 100644
--- a/docs/docs/guides/input/file-params.md
+++ b/docs/docs/guides/input/file-params.md
@@ -7,7 +7,7 @@ from ninja import NinjaAPI, File
 from ninja.files import UploadedFile
 
 @api.post("/upload")
-def upload(request, file: UploadedFile = File(...)):
+def upload(request, file: File[UploadedFile]):
     data = file.read()
     return {'name': file.name, 'len': len(data)}
 ```
@@ -36,7 +36,7 @@ from ninja import NinjaAPI, File
 from ninja.files import UploadedFile
 
 @api.post("/upload-many")
-def upload_many(request, files: List[UploadedFile] = File(...)):
+def upload_many(request, files: File[List[UploadedFile]]):
     return [f.name for f in files]
 ```
 
@@ -96,7 +96,7 @@ If you would like the file input to be optional, all that you have to do is to p
 
 ```python
 @api.post('/users')
-def create_user(request, details: Form[UserDetails], avatar: UploadedFile = File(None)):
+def create_user(request, details: Form[UserDetails], avatar: File[UploadedFile] = None):
     user = add_user_to_database(details)
     if avatar is not None:
         set_user_avatar(user)
diff --git a/docs/docs/tutorial/other/crud.md b/docs/docs/tutorial/other/crud.md
index 17008a92d..985916d7e 100644
--- a/docs/docs/tutorial/other/crud.md
+++ b/docs/docs/tutorial/other/crud.md
@@ -59,7 +59,7 @@ See the recipe below for handling the file upload (when using Django models):
 from ninja import UploadedFile, File
 
 @api.post("/employees")
-def create_employee(request, payload: EmployeeIn, cv: UploadedFile = File(...)):
+def create_employee(request, payload: EmployeeIn, cv: File[UploadedFile]):
     payload_dict = payload.dict()
     employee = Employee(**payload_dict)
     employee.cv.save(cv.name, cv) # will save model instance as well
@@ -75,7 +75,7 @@ from ninja import UploadedFile, File
 STORAGE = FileSystemStorage()
 
 @api.post("/upload")
-def create_upload(request, cv: UploadedFile = File(...)):
+def create_upload(request, cv: File[UploadedFile]):
     filename = STORAGE.save(cv.name, cv)
     # Handle things further
 ```
diff --git a/tests/demo_project/multi_param/api.py b/tests/demo_project/multi_param/api.py
index 9d9a09891..71328c90b 100644
--- a/tests/demo_project/multi_param/api.py
+++ b/tests/demo_project/multi_param/api.py
@@ -177,7 +177,7 @@ def test_multi_form_body(
 @router.post("/test-multi-body-form-file", response=ResponseData, by_alias=True)
 def test_multi_body_form_file(
     request,
-    file: UploadedFile = File(...),
+    file: File[UploadedFile],
     i: int = Body(...),
     s: str = Form("a-str"),
     data: TestData4 = Body(..., **test_data4_extra),
@@ -189,7 +189,7 @@ def test_multi_body_form_file(
 @router.post("/test-multi-form-body-file", response=ResponseData, by_alias=True)
 def test_multi_form_body_file(
     request,
-    file: UploadedFile = File(...),
+    file: File[UploadedFile],
     i: int = Form(...),
     s: str = Body("a-str"),
     data: TestData4 = Form(..., **test_data4_extra),