diff --git a/mysql/tables/llx_c_chargesociales.sql b/mysql/tables/llx_c_chargesociales.sql
index 228a2f93c0d..e38b4133014 100644
--- a/mysql/tables/llx_c_chargesociales.sql
+++ b/mysql/tables/llx_c_chargesociales.sql
@@ -23,7 +23,7 @@
 
 create table llx_c_chargesociales
 (
-  id          integer PRIMARY KEY,
+  id          integer AUTO_INCREMENT PRIMARY KEY,
   libelle     varchar(80),
   deductible  smallint DEFAULT 0 NOT NULL,
   active      tinyint DEFAULT 1  NOT NULL