diff --git a/adminer/drivers/mysql.inc.php b/adminer/drivers/mysql.inc.php
index c9b44ae1..d400f26f 100644
--- a/adminer/drivers/mysql.inc.php
+++ b/adminer/drivers/mysql.inc.php
@@ -1024,7 +1024,6 @@ if (!defined("DRIVER")) {
 		return $connection->result("SELECT @@max_connections");
 	}
 
-	$id_name = "Id";
 	$jush = "sql"; ///< @var string JUSH identifier
 	$types = array(); ///< @var array ($type => $maximum_unsigned_length, ...)
 	$structured_types = array(); ///< @var array ($description => array($type, ...), ...)
diff --git a/adminer/drivers/pgsql.inc.php b/adminer/drivers/pgsql.inc.php
index 87b69b2f..eb59bd83 100644
--- a/adminer/drivers/pgsql.inc.php
+++ b/adminer/drivers/pgsql.inc.php
@@ -643,7 +643,6 @@ AND typelem = 0"
 		return $connection->result("SHOW max_connections");
 	}
 
-	$id_name = "pid";
 	$jush = "pgsql";
 	$types = array();
 	$structured_types = array();
diff --git a/adminer/processlist.inc.php b/adminer/processlist.inc.php
index d798f8d8..6ddeb7bc 100644
--- a/adminer/processlist.inc.php
+++ b/adminer/processlist.inc.php
@@ -30,7 +30,7 @@ foreach (process_list() as $i => $row) {
 		}
 		echo "</thead>\n";
 	}
-	echo "<tr" . odd() . ">" . (support("kill") ? "<td>" . checkbox("kill[]", $row[$id_name], 0) : "");
+	echo "<tr" . odd() . ">" . (support("kill") ? "<td>" . checkbox("kill[]", $row[$jush == "sql" ? "Id" : "pid"], 0) : "");
 	foreach ($row as $key => $val) {
 		echo "<td>" . (
 			($jush == "sql" && $key == "Info" && preg_match("~Query|Killed~", $row["Command"]) && $val != "") ||