diff --git a/src/user_profile.eml.html b/src/user_profile.eml.html
index 65bbc27..c22c93d 100644
--- a/src/user_profile.eml.html
+++ b/src/user_profile.eml.html
@@ -32,7 +32,7 @@ let f (user: User.t) request =
   <br />
   <br />
   <%s! Dream.form_tag ~action:"/profile" ~enctype:`Multipart_form_data request %>
-    <input name="file" type="file"><br />
+    <input id="file" name="file" aria-describedby="file-label" type="file" accept="image/png,image/jpeg,image/webp,image/gif">
     <br />
     <button class="btn btn-primary">Submit picture!</button>
   </form>