diff --git a/app/Util/ActivityPub/HttpSignature.php b/app/Util/ActivityPub/HttpSignature.php
index 7464ac890..3a3650d44 100644
--- a/app/Util/ActivityPub/HttpSignature.php
+++ b/app/Util/ActivityPub/HttpSignature.php
@@ -186,7 +186,6 @@ class HttpSignature
 
         $signatureHeader = 'keyId="'.$keyId.'",headers="'.$signedHeaders.'",algorithm="rsa-sha256",signature="'.$signature.'"';
         unset($headers['(request-target)']);
-        unset($headers['Host']);
         $headers['Signature'] = $signatureHeader;
 
         return $headers;