diff --git a/app/helpers/context_helper.rb b/app/helpers/context_helper.rb
index f4cf1f3a92..7e7dee7f9c 100644
--- a/app/helpers/context_helper.rb
+++ b/app/helpers/context_helper.rb
@@ -24,7 +24,7 @@ module ContextHelper
     voters_count: { 'toot' => 'http://joinmastodon.org/ns#', 'votersCount' => 'toot:votersCount' },
     olm: { 'toot' => 'http://joinmastodon.org/ns#', 'Device' => 'toot:Device', 'Ed25519Signature' => 'toot:Ed25519Signature', 'Ed25519Key' => 'toot:Ed25519Key', 'Curve25519Key' => 'toot:Curve25519Key', 'EncryptedMessage' => 'toot:EncryptedMessage', 'publicKeyBase64' => 'toot:publicKeyBase64', 'deviceId' => 'toot:deviceId', 'claim' => { '@type' => '@id', '@id' => 'toot:claim' }, 'fingerprintKey' => { '@type' => '@id', '@id' => 'toot:fingerprintKey' }, 'identityKey' => { '@type' => '@id', '@id' => 'toot:identityKey' }, 'devices' => { '@type' => '@id', '@id' => 'toot:devices' }, 'messageFranking' => 'toot:messageFranking', 'messageType' => 'toot:messageType', 'cipherText' => 'toot:cipherText' },
     suspended: { 'toot' => 'http://joinmastodon.org/ns#', 'suspended' => 'toot:suspended' },
-    quoteUrl: { 'quoteUrl' => 'as:quoteUrl' },
+    quoteUri: { 'fedibird' => 'http://fedibird.com/ns#', 'quoteUri' => 'fedibird:quoteUri' },
   }.freeze
 
   def full_context
diff --git a/app/serializers/activitypub/note_serializer.rb b/app/serializers/activitypub/note_serializer.rb
index c9101b4469..dbde440467 100644
--- a/app/serializers/activitypub/note_serializer.rb
+++ b/app/serializers/activitypub/note_serializer.rb
@@ -11,8 +11,7 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
              :atom_uri, :in_reply_to_atom_uri,
              :conversation
 
-  attribute :quote_url, if: -> { object.quote? }
-  attribute :misskey_quote, key: :_misskey_quote, if: -> { object.quote? }
+  attribute :quote_uri, if: -> { object.quote? }
 
   attribute :content
   attribute :content_map, if: :language?
@@ -152,12 +151,10 @@ class ActivityPub::NoteSerializer < ActivityPub::Serializer
     end
   end
 
-  def quote_url
+  def quote_uri
     ActivityPub::TagManager.instance.uri_for(object.quote) if object.quote?
   end
 
-  alias misskey_quote quote_url
-
   def local?
     object.account.local?
   end