diff --git a/app/lib/activitypub/activity/create.rb b/app/lib/activitypub/activity/create.rb
index 56a3f7186bbb1a..7a80133165c38e 100644
--- a/app/lib/activitypub/activity/create.rb
+++ b/app/lib/activitypub/activity/create.rb
@@ -507,15 +507,15 @@ def join_group!
   end
 
   def searchability_from_audience
-    if audience_searchable_by.nil?
-      nil
-    elsif audience_searchable_by.any? { |uri| ActivityPub::TagManager.instance.public_collection?(uri) }
+    return nil if audience_searchable_by.blank?
+
+    if audience_searchable_by.any? { |uri| ActivityPub::TagManager.instance.public_collection?(uri) }
       :public
     elsif audience_searchable_by.include?('kmyblue:Limited') || audience_searchable_by.include?('as:Limited')
       :limited
     elsif audience_searchable_by.include?(@account.followers_url)
       :private
-    else
+    elsif audience_searchable_by.include?(@account.uri) || audience_searchable_by.include?(@account.url)
       :direct
     end
   end
diff --git a/app/lib/activitypub/tag_manager.rb b/app/lib/activitypub/tag_manager.rb
index 52f7ed32ab4b4c..b8a969c55899ea 100644
--- a/app/lib/activitypub/tag_manager.rb
+++ b/app/lib/activitypub/tag_manager.rb
@@ -237,12 +237,10 @@ def searchable_by(status)
         [COLLECTIONS[:public]]
       when 'private'
         [account_followers_url(status.account)]
-      when 'direct'
-        status.conversation_id.present? ? [uri_for(status.conversation)] : []
       when 'limited'
         ['as:Limited', 'kmyblue:Limited']
       else
-        []
+        status.conversation_id.present? ? [uri_for(status.conversation), account_url(status.account)] : [account_url(status.account)]
       end
 
     searchable_by.concat(mentions_uris(status)).compact
@@ -257,7 +255,7 @@ def account_searchable_by(account)
     when 'limited'
       ['as:Limited', 'kmyblue:Limited']
     else
-      []
+      [account_url(account)]
     end
   end
 
diff --git a/app/services/activitypub/process_account_service.rb b/app/services/activitypub/process_account_service.rb
index 5d98bb617d518f..bf276aa33ce0e3 100644
--- a/app/services/activitypub/process_account_service.rb
+++ b/app/services/activitypub/process_account_service.rb
@@ -267,7 +267,7 @@ def audience_searchable_by
   end
 
   def searchability_from_audience
-    if audience_searchable_by.nil?
+    if audience_searchable_by.blank?
       bio = searchability_from_bio
       return bio unless bio.nil?
 
diff --git a/lib/mastodon/version.rb b/lib/mastodon/version.rb
index 92b18006f5050e..aa7c293c9b176f 100644
--- a/lib/mastodon/version.rb
+++ b/lib/mastodon/version.rb
@@ -9,7 +9,7 @@ def kmyblue_major
     end
 
     def kmyblue_minor
-      23
+      24
     end
 
     def kmyblue_flag
diff --git a/spec/lib/activitypub/activity/create_spec.rb b/spec/lib/activitypub/activity/create_spec.rb
index b6fa8da6b0b468..4dad74c4bc5bdd 100644
--- a/spec/lib/activitypub/activity/create_spec.rb
+++ b/spec/lib/activitypub/activity/create_spec.rb
@@ -564,7 +564,7 @@ def activity_for_object(json)
         end
 
         context 'with direct' do
-          let(:searchable_by) { '' }
+          let(:searchable_by) { 'https://example.com/actor' }
 
           it 'create status' do
             status = sender.statuses.first
@@ -574,6 +574,17 @@ def activity_for_object(json)
           end
         end
 
+        context 'with empty array' do
+          let(:searchable_by) { '' }
+
+          it 'create status' do
+            status = sender.statuses.first
+
+            expect(status).to_not be_nil
+            expect(status.searchability).to be_nil
+          end
+        end
+
         context 'with direct when not specify' do
           let(:searchable_by) { nil }
 
diff --git a/spec/serializers/activitypub/note_serializer_spec.rb b/spec/serializers/activitypub/note_serializer_spec.rb
index 280f6e37bec063..9a82d652984f23 100644
--- a/spec/serializers/activitypub/note_serializer_spec.rb
+++ b/spec/serializers/activitypub/note_serializer_spec.rb
@@ -5,9 +5,9 @@
 describe ActivityPub::NoteSerializer do
   subject { JSON.parse(@serialization.to_json) }
 
-  let!(:account) { Fabricate(:account) }
+  let!(:account) { Fabricate(:account, searchability: :public) }
   let!(:other) { Fabricate(:account) }
-  let!(:parent) { Fabricate(:status, account: account, visibility: :public, language: 'zh-TW') }
+  let!(:parent) { Fabricate(:status, account: account, visibility: :public, searchability: searchability, language: 'zh-TW') }
   let!(:reply_by_account_first) { Fabricate(:status, account: account, thread: parent, visibility: :public) }
   let!(:reply_by_account_next) { Fabricate(:status, account: account, thread: parent, visibility: :public) }
   let!(:reply_by_other_first) { Fabricate(:status, account: other, thread: parent, visibility: :public) }
@@ -16,6 +16,7 @@
   let!(:referred) { nil }
   let!(:referred2) { nil }
   let(:convert_to_quote) { false }
+  let(:searchability) { :public }
 
   before(:each) do
     parent.references << referred if referred.present?
@@ -55,6 +56,14 @@
     expect(subject['replies']['first']['items']).to_not include(reply_by_account_visibility_direct.uri)
   end
 
+  context 'when direct searchability' do
+    let(:searchability) { :direct }
+
+    it 'send as direct searchability' do
+      expect(subject['searchableBy']).to include "https://cb6e6126.ngrok.io/users/#{account.username}"
+    end
+  end
+
   context 'when has quote but no_convert setting' do
     let(:referred) { Fabricate(:status) }
 
diff --git a/spec/services/activitypub/process_account_service_spec.rb b/spec/services/activitypub/process_account_service_spec.rb
index f782c69cdb9d8e..05067b23414dea 100644
--- a/spec/services/activitypub/process_account_service_spec.rb
+++ b/spec/services/activitypub/process_account_service_spec.rb
@@ -49,7 +49,7 @@
     end
 
     context 'when direct' do
-      let(:searchable_by) { '' }
+      let(:searchable_by) { 'https://foo.test' }
 
       it 'searchability is direct' do
         expect(subject.searchability).to eq 'direct'
@@ -72,6 +72,14 @@
       end
     end
 
+    context 'when empty array' do
+      let(:searchable_by) { '' }
+
+      it 'searchability is direct' do
+        expect(subject.searchability).to eq 'direct'
+      end
+    end
+
     context 'when default value' do
       let(:searchable_by) { nil }