diff --git a/lib/galaxy/tools/toolbox/filters/__init__.py b/lib/galaxy/tools/toolbox/filters/__init__.py
index 59ec37d67ee..8e9a1677f11 100644
--- a/lib/galaxy/tools/toolbox/filters/__init__.py
+++ b/lib/galaxy/tools/toolbox/filters/__init__.py
@@ -44,7 +44,7 @@ class FilterFactory(object):
                     elif name == 'toolbox_label_filters':
                         category = "label"
                     if category:
-                        validate = getattr(trans.app.config, 'user_tools_%s_filters' % category, [])
+                        validate = getattr(trans.app.config, 'user_tool_%s_filters' % category, [])
                         self.__init_filters(category, user_filters, filters, validate=validate)
         else:
             if kwds.get("trackster", False):