diff --git a/core/trunk/structure.sql b/core/trunk/structure.sql
index a753683b66613c02c84afce55278cccee5bcef90..170653f7cbeae5ca0b9be73e8ee46bb8392bdfea 100644
--- a/core/trunk/structure.sql
+++ b/core/trunk/structure.sql
@@ -820,6 +820,7 @@ CREATE TABLE listinstance
   added_by_entity character varying(50) NOT NULL,
   visible character varying(50) NOT NULL DEFAULT 'Y'::bpchar,
   viewed bigint,
+  difflist_type character varying(50),
   CONSTRAINT listinstance_pkey PRIMARY KEY (listinstance_id)
 )
 WITH (OIDS=FALSE);