diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 8d578d1f..fec5ce40 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -695,7 +695,7 @@ function input($field, $value, $function) {
 			}
 			$first++;
 		}
-		$onchange = ($first ? " onchange=\"var f = this.form['function[" . h(js_escape($name)) . "]']; if ($first > f.selectedIndex) f.selectedIndex = $first;\"" : "");
+		$onchange = ($first ? " onchange=\"var f = this.form['function[" . h(js_escape(bracket_escape($field["field"]))) . "]']; if ($first > f.selectedIndex) f.selectedIndex = $first;\"" : "");
 		$attrs .= $onchange;
 		echo (count($functions) > 1 ? html_select("function[$name]", $functions, !isset($function) || in_array($function, $functions) || isset($functions[$function]) ? $function : "", "functionChange(this);") : nbsp(reset($functions))) . '<td>';
 		$input = $adminer->editInput($_GET["edit"], $field, $attrs, $value); // usage in call is without a table