diff --git a/lib/galaxy/webapps/galaxy/api/users.py b/lib/galaxy/webapps/galaxy/api/users.py
index 60b92ea40b5..6f8d125610e 100644
--- a/lib/galaxy/webapps/galaxy/api/users.py
+++ b/lib/galaxy/webapps/galaxy/api/users.py
@@ -710,14 +710,14 @@ class UserAPIController(BaseAPIController, UsesTagsMixin, CreatesUsersMixin, Cre
                 errors['%s|%s' % (filter_type, filter_name)] = 'Filter function not found.'
 
             short_description, description = None, None
-            doc_string = docstring_trim( function.__doc__ )
+            doc_string = docstring_trim(function.__doc__)
             split = doc_string.split('\n\n')
             if split:
                 short_description = split[0]
                 if len(split) > 1:
                     description = split[1]
             else:
-                log.warning( 'No description specified in the __doc__ string for %s.' % filter_name )
+                log.warning('No description specified in the __doc__ string for %s.' % filter_name)
 
             filter_inputs.append({
                 'type': 'boolean',