diff --git a/htdocs/telephonie/sql/llx_telephonie_facture.sql b/htdocs/telephonie/sql/llx_telephonie_facture.sql
index 72e7204d844..8d5bbca90ad 100644
--- a/htdocs/telephonie/sql/llx_telephonie_facture.sql
+++ b/htdocs/telephonie/sql/llx_telephonie_facture.sql
@@ -25,6 +25,7 @@
 
 create table llx_telephonie_facture (
   rowid             integer AUTO_INCREMENT PRIMARY KEY,
+  fk_contrat        integer NOT NULL,
   fk_ligne          integer NOT NULL,
   ligne             varchar(255) NOT NULL,
   date              varchar(255) NOT NULL,