diff --git a/lib/private/Http/Client/DnsPinMiddleware.php b/lib/private/Http/Client/DnsPinMiddleware.php
index 3bb401639bb..97168ec9475 100644
--- a/lib/private/Http/Client/DnsPinMiddleware.php
+++ b/lib/private/Http/Client/DnsPinMiddleware.php
@@ -113,7 +113,7 @@ class DnsPinMiddleware {
 					$ports[] = (string)$port;
 				}
 
-				$targetIps = $this->dnsResolve(idn_to_ascii($hostName, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46), 0);
+				$targetIps = $this->dnsResolve(idn_to_ascii($hostName, IDNA_DEFAULT, INTL_IDNA_VARIANT_UTS46, null), 0);
 
 				if (empty($targetIps)) {
 					throw new LocalServerException('No DNS record found for ' . $hostName);