diff --git a/mysql/tables/llx_const.sql b/mysql/tables/llx_const.sql
index bb5caa85744..bb5ad0fa02d 100644
--- a/mysql/tables/llx_const.sql
+++ b/mysql/tables/llx_const.sql
@@ -28,6 +28,7 @@ create table llx_const
   rowid       integer AUTO_INCREMENT PRIMARY KEY,
   name        varchar(255),
   value       varchar(255),
+  type        enum('yesno'),
   note        text,
 
   UNIQUE INDEX(name)