diff --git a/mysql/migration/1.1.0-2.0.0.sql b/mysql/migration/1.1.0-2.0.0.sql
index c9f789439f5..44806fb85e1 100644
--- a/mysql/migration/1.1.0-2.0.0.sql
+++ b/mysql/migration/1.1.0-2.0.0.sql
@@ -1050,7 +1050,7 @@ delete from llx_c_ape;
 
 create table llx_c_chargesociales
 (
-  id          integer PRIMARY KEY,
+  id          integer AUTO_INCREMENT PRIMARY KEY,
   libelle     varchar(80),
   deductible  smallint NOT NULL default 0,
   active      tinyint default 1  NOT NULL