diff --git a/index.php b/index.php
index 5dac7df..d4b776c 100644
--- a/index.php
+++ b/index.php
@@ -32,7 +32,7 @@ if (!isset($config)) $config = [];
 
 $action = (isset($_REQUEST['action']) and preg_match(ACTION_REGEX, $_REQUEST['action'])) ? $_REQUEST['action'] : null;
 
-$supplier = array_key_exist('supplier', $_REQUEST) ? $_REQUEST['supplier'] : $requestSupplier;
+$supplier = array_key_exists('supplier', $_REQUEST) ? $_REQUEST['supplier'] : $requestSupplier;
 $hasSupplier = is_string($supplier) and preg_match(SUPPLIER_REGEX, $supplier);
 
 if ($hasSupplier) {
@@ -116,7 +116,7 @@ if ($action === 'config') {
 }
 
 try {
-	$event = array_key_exist('event', $_REQUEST) ? $_REQUEST['event'] : $requestEvent;
+	$event = array_key_exists('event', $_REQUEST) ? $_REQUEST['event'] : $requestEvent;
 	$hasEvent = (
 		is_string($event)
 		and preg_match(EVENT_REGEX, $event)