diff --git a/htdocs/lib/mysql.lib.php b/htdocs/lib/mysql.lib.php
index fdc126ecfa0..3f6712d2884 100644
--- a/htdocs/lib/mysql.lib.php
+++ b/htdocs/lib/mysql.lib.php
@@ -61,6 +61,7 @@ class DoliDb
     1050 => 'DB_ERROR_TABLE_ALREADY_EXISTS',
     1051 => 'DB_ERROR_NOSUCHTABLE',
     1054 => 'DB_ERROR_NOSUCHFIELD',
+    1061 => 'DB_ERROR_KEY_NAME_ALREADY_EXISTS', 
     1062 => 'DB_ERROR_RECORD_ALREADY_EXISTS',
     1064 => 'DB_ERROR_SYNTAX',
     1100 => 'DB_ERROR_NOT_LOCKED',