diff --git a/doc/sql/mysql.sql b/doc/sql/mysql.sql
index 94348ea1..3ca9d124 100644
--- a/doc/sql/mysql.sql
+++ b/doc/sql/mysql.sql
@@ -27,7 +27,7 @@ CREATE TABLE IF NOT EXISTS `input` (
 
 CREATE TABLE IF NOT EXISTS `sensors` (
   `id` int(11) NOT NULL auto_increment,
-  `ip` varchar(15) NOT NULL,
+  `ip` varchar(255) NOT NULL,
   PRIMARY KEY  (`id`)
 ) ;
 
diff --git a/doc/sql/update11.sql b/doc/sql/update11.sql
new file mode 100644
index 00000000..e1c2bff1
--- /dev/null
+++ b/doc/sql/update11.sql
@@ -0,0 +1 @@
+ALTER TABLE sensors MODIFY ip VARCHAR(255) NOT NULL;