diff --git a/mysql/migration/1.0.0_RC1-1.0.0_RC2.sql b/mysql/migration/1.0.0_RC1-1.0.0_RC2.sql
index e55029443c3..37f087e8605 100644
--- a/mysql/migration/1.0.0_RC1-1.0.0_RC2.sql
+++ b/mysql/migration/1.0.0_RC1-1.0.0_RC2.sql
@@ -6,8 +6,8 @@
 create table llx_facture_tva_sum
 (
   fk_facture    integer NOT NULL,
-  amount        real,
-  tva_tx        real default 19.6,
+  amount        real  NOT NULL,
+  tva_tx        real  NOT NULL,
 
   KEY(fk_facture)
 );