diff --git a/retriever/retriever.php b/retriever/retriever.php
index 047511c5..ef00bd33 100644
--- a/retriever/retriever.php
+++ b/retriever/retriever.php
@@ -276,7 +276,7 @@ function retrieve_resource($resource) {
 		$redirects = 0;
 		$cookiejar = '';
 		if (array_key_exists('storecookies', $rule_data) && $rule_data['storecookies']) {
-			$cookiejar = tempnam(get_temppath(), 'cookiejar-retriever-');
+			$cookiejar = tempnam(System::getTempPath(), 'cookiejar-retriever-');
 			file_put_contents($cookiejar, $rule_data['cookiedata']);
 		}
 		$fetch_result = DI::httpClient()->fetchFull($resource['url'], $redirects, '', $cookiejar);