diff --git a/app/call_block/call_block_edit.php b/app/call_block/call_block_edit.php
index 4f5a44667a..aa08118048 100644
--- a/app/call_block/call_block_edit.php
+++ b/app/call_block/call_block_edit.php
@@ -342,6 +342,7 @@ if (permission_exists('call_block_all') || permission_exists('call_block_ring_gr
 	$sql .= "order by voicemail_id asc ";
 	$parameters['domain_uuid'] = $_SESSION['domain_uuid'];
 	$voicemails = $database->select($sql, $parameters);
+	unset($sql, $parameters);
 
 //create token
 	$object = new token;
diff --git a/core/groups/group_permissions.php b/core/groups/group_permissions.php
index c47fcbb750..2368d626d8 100644
--- a/core/groups/group_permissions.php
+++ b/core/groups/group_permissions.php
@@ -121,6 +121,7 @@
 	$parameters['group_name'] = $group_name;
 	$parameters['group_uuid'] = $group_uuid;
 	$group_permissions = $database->select($sql, $parameters, 'all');
+	unset($sql, $parameters);
 
 //process the user data and save it to the database
 	if (!empty($_POST) > 0 && empty($_POST["persistformvar"])) {