diff --git a/mysql/migration/2.0.0-2.1.0.sql b/mysql/migration/2.0.0-2.1.0.sql
index 9ec55168a64..f6ea6433aa8 100644
--- a/mysql/migration/2.0.0-2.1.0.sql
+++ b/mysql/migration/2.0.0-2.1.0.sql
@@ -194,6 +194,8 @@ update llx_const set value='azur' where value='orange' and name = 'PROPALE_ADDON
 
 
 alter table llx_propal_model_pdf rename to llx_document_model;
+alter table llx_document_model DROP PRIMARY KEY;
+alter table llx_document_model add column rowid integer AUTO_INCREMENT PRIMARY KEY FIRST;
 alter table llx_document_model add column type varchar(20) NOT NULL after nom;
 update llx_document_model set type='propal' where type='';
 
diff --git a/mysql/tables/llx_document_model.sql b/mysql/tables/llx_document_model.sql
index bd96f4764a0..f0136cbb119 100644
--- a/mysql/tables/llx_document_model.sql
+++ b/mysql/tables/llx_document_model.sql
@@ -25,8 +25,9 @@
 
 create table llx_document_model
 (
-  	nom         	varchar(50) PRIMARY KEY,
-  	type			varchar(12) NOT NULL,
+  	rowid         integer AUTO_INCREMENT PRIMARY KEY,
+  	nom         	varchar(50),
+  	type			    varchar(12) NOT NULL,
   	libelle		    varchar(255),
   	description 	text
 )type=innodb;
\ No newline at end of file