diff --git a/r2/r2/controllers/api.py b/r2/r2/controllers/api.py
index 9bfb20a7c..05c81b4e1 100755
--- a/r2/r2/controllers/api.py
+++ b/r2/r2/controllers/api.py
@@ -3505,7 +3505,7 @@ class ApiController(RedditController, OAuth2ResourceController):
     @validatedMultipartForm(VUser(),
                             VModhash(),
                             client=VOAuth2ClientDeveloper(),
-                            icon_file=VLength(
+                            icon_file=VUploadLength(
                                 'file', max_length=1024*128,
                                 docs=dict(file="an icon (72x72)")))
     @api_doc(api_section.apps)