diff --git a/webform.install b/webform.install
index 7c54d4c..e44b727 100644
--- a/webform.install
+++ b/webform.install
@@ -545,9 +545,10 @@ function webform_schema() {
       ),
       'no' => array(
         'description' => 'Usually this value is 0, but if a field has multiple values (such as a time or date), it may require multiple rows in the database.',
-        'type' => 'varchar',
-        'length' => 128,
+        'type' => 'int',
+        'size' => 'small',
         'not null' => TRUE,
+        'unsigned' => TRUE,
         'default' => '0',
       ),
       'data' => array(