diff --git a/htdocs/install/mysql/tables/llx_c_type_resource.sql b/htdocs/install/mysql/tables/llx_c_type_resource.sql
index 8ba088c075e..a12abb95f83 100644
--- a/htdocs/install/mysql/tables/llx_c_type_resource.sql
+++ b/htdocs/install/mysql/tables/llx_c_type_resource.sql
@@ -27,7 +27,7 @@
 
 create table llx_c_type_resource
 (
-  rowid      	integer     PRIMARY KEY,
+  rowid      	integer AUTO_INCREMENT PRIMARY KEY,
   code          varchar(32) NOT NULL,
   label 	    varchar(64)	NOT NULL,
   active  	    tinyint DEFAULT 1  NOT NULL