diff --git a/lowfat/validator.py b/lowfat/validator.py
index 903b4b7c..4e32fa3b 100644
--- a/lowfat/validator.py
+++ b/lowfat/validator.py
@@ -15,6 +15,11 @@ def online_document(url):
     except HTTPError as exception:
         if exception.code == 410:
             raise ValidationError("Online document was removed.")  # This is the code returned by Google Drive
+        elif exception.code == 403:
+            req = request.Request(url, headers={'User-Agent' : "lowFAT"})
+            online_resource = request.urlopen(req)
+        else:
+            raise ValidationError("Error! HTTP status code is {}.".format(exception.code))
 
     # Need to test if website didn't redirect the request to another resource.
     if url != online_resource.geturl() or online_resource.getcode() != 200: