diff --git a/simpleui/templatetags/simpletags.py b/simpleui/templatetags/simpletags.py
index 4e91d92c..1f6bf5e0 100644
--- a/simpleui/templatetags/simpletags.py
+++ b/simpleui/templatetags/simpletags.py
@@ -230,6 +230,8 @@ def menus(context, _get_config=None):
     config = _get_config('SIMPLEUI_CONFIG')
     if not config:
         config = {}
+    else:
+        config = config.copy()
 
     if config.get('dynamic', False) is True:
         config = _import_reload(_get_config('DJANGO_SETTINGS_MODULE')).SIMPLEUI_CONFIG