diff --git a/force_bdss/ids.py b/force_bdss/ids.py
index b51a796a46f96b84f9f1114854091e18b6b3286f..b6b89379101e0ae6a45b5f3252273553514e2bf8 100644
--- a/force_bdss/ids.py
+++ b/force_bdss/ids.py
@@ -37,6 +37,9 @@ def mco_parameter_id(producer, identifier):
 
 
 def plugin_id(producer, identifier):
+    """Creates an ID for the plugins. These must be defined, otherwise 
+    the envisage system will complain (but not break)
+    """
     return _string_id("plugin", producer, identifier)