diff --git a/lib/private/AppFramework/Http/Request.php b/lib/private/AppFramework/Http/Request.php
index 587178e8ed..9d210cd841 100644
--- a/lib/private/AppFramework/Http/Request.php
+++ b/lib/private/AppFramework/Http/Request.php
@@ -853,6 +853,10 @@ class Request implements \ArrayAccess, \Countable, IRequest {
 	 * @return string Server host
 	 */
 	public function getInsecureServerHost(): string {
+		if ($this->fromTrustedProxy() && $this->getOverwriteHost() !== null) {
+			return $this->getOverwriteHost();
+		}
+
 		$host = 'localhost';
 		if ($this->fromTrustedProxy() && isset($this->server['HTTP_X_FORWARDED_HOST'])) {
 			if (strpos($this->server['HTTP_X_FORWARDED_HOST'], ',') !== false) {
@@ -868,6 +872,7 @@ class Request implements \ArrayAccess, \Countable, IRequest {
 				$host = $this->server['SERVER_NAME'];
 			}
 		}
+
 		return $host;
 	}