diff --git a/lib/private/security/trusteddomainhelper.php b/lib/private/security/trusteddomainhelper.php
index 6dbaadfdb60192a7f5af05cc192566db25bce428..7d7cd5196b16bfe5e7ace830a8606bc0be9f1fde 100644
--- a/lib/private/security/trusteddomainhelper.php
+++ b/lib/private/security/trusteddomainhelper.php
@@ -74,11 +74,6 @@ class TrustedDomainHelper {
 			return false;
 		}
 
-		// TODO: Workaround for older instances still with port applied. Remove for ownCloud 9.
-		if(in_array($domainWithPort, $trustedList)) {
-			return true;
-		}
-
 		// Always allow access from localhost
 		if (preg_match(Request::REGEX_LOCALHOST, $domain) === 1) {
 			return true;