diff --git a/adminer/include/editing.inc.php b/adminer/include/editing.inc.php
index 3f24b0c6..f4728a34 100644
--- a/adminer/include/editing.inc.php
+++ b/adminer/include/editing.inc.php
@@ -98,7 +98,7 @@ function edit_type($key, $field, $collations, $foreign_keys = array()) {
global $structured_types, $unsigned, $inout;
?>
- | " size="3">
+ | " size="3" onfocus="editing_length_focus(this);">
| |