diff --git a/htdocs/lib/mysql.lib.php b/htdocs/lib/mysql.lib.php
index 3f6712d2884..785573bf108 100644
--- a/htdocs/lib/mysql.lib.php
+++ b/htdocs/lib/mysql.lib.php
@@ -68,6 +68,7 @@ class DoliDb
     1136 => 'DB_ERROR_VALUE_COUNT_ON_ROW',
     1146 => 'DB_ERROR_NOSUCHTABLE',
     1048 => 'DB_ERROR_CONSTRAINT',
+    1216 => 'DB_ERROR_NO_PARENT',
     1217 => 'DB_ERROR_CHILD_EXISTS'
     );