diff --git a/server/initializers/constants.ts b/server/initializers/constants.ts
index 44f676a15..909fffdb6 100644
--- a/server/initializers/constants.ts
+++ b/server/initializers/constants.ts
@@ -589,7 +589,7 @@ const ACTIVITY_PUB_ACTOR_TYPES: { [ id: string ]: ActivityPubActorType } = {
 const HTTP_SIGNATURE = {
   HEADER_NAME: 'signature',
   ALGORITHM: 'rsa-sha256',
-  HEADERS_TO_SIGN: [ '(request-target)', '(created)', 'host', 'date', 'digest' ],
+  HEADERS_TO_SIGN: [ '(request-target)', 'host', 'date', 'digest' ],
   CLOCK_SKEW_SECONDS: 1800
 }