diff --git a/adminer/include/functions.inc.php b/adminer/include/functions.inc.php
index 196f70be..5fae0553 100644
--- a/adminer/include/functions.inc.php
+++ b/adminer/include/functions.inc.php
@@ -202,7 +202,11 @@ function optionlist($options, $selected = null, $use_keys = false) {
$opts = $v;
}
foreach ($opts as $key => $val) {
- $return .= '