diff --git a/app/Http/Controllers/Api/BaseApiController.php b/app/Http/Controllers/Api/BaseApiController.php
index dd455fda5..ce78c74e6 100644
--- a/app/Http/Controllers/Api/BaseApiController.php
+++ b/app/Http/Controllers/Api/BaseApiController.php
@@ -183,7 +183,7 @@ class BaseApiController extends Controller
     {
         abort_if(!$request->user(), 403);
         $this->validate($request, [
-            'upload'   => 'required|mimetypes:jpeg,png,gif|max:'.config('pixelfed.max_avatar_size'),
+            'upload'   => 'required|mimetypes:image/jpeg,image/jpg,image/png|max:'.config('pixelfed.max_avatar_size'),
         ]);
 
         try {
diff --git a/app/Http/Controllers/AvatarController.php b/app/Http/Controllers/AvatarController.php
index bb95c1eda..ea5f84783 100644
--- a/app/Http/Controllers/AvatarController.php
+++ b/app/Http/Controllers/AvatarController.php
@@ -19,7 +19,7 @@ class AvatarController extends Controller
     public function store(Request $request)
     {
         $this->validate($request, [
-          'avatar' => 'required|mimetypes:jpeg,png|max:'.config('pixelfed.max_avatar_size'),
+          'avatar' => 'required|mimetypes:image/jpeg,image/jpg,image/png|max:'.config('pixelfed.max_avatar_size'),
         ]);
 
         try {