diff --git a/config-sample.py b/config-sample.py
index be8f777..ff86035 100644
--- a/config-sample.py
+++ b/config-sample.py
@@ -1,3 +1,5 @@
+CACHE = {}
+
 # Openbravo API parameters
 
 ob_api_url = "http://[your-openbravo-domain]/openbravo/org.openbravo.service.json.jsonrest/"