diff --git a/app/models/admin/ng_rule.rb b/app/models/admin/ng_rule.rb
index 54ca39b4c9..3f25d8896e 100644
--- a/app/models/admin/ng_rule.rb
+++ b/app/models/admin/ng_rule.rb
@@ -62,9 +62,11 @@ class Admin::NgRule
     return false if @ng_rule.reaction_allow_follower && (recipient.id == @account.id || (!recipient.local? && !@account.local?) || recipient.following?(@account))
 
     if @options[:reaction_type] == 'emoji_reaction'
-      enum_match?(:reaction_type, @options[:reaction_type], @ng_rule.reaction_type) &&
-        text_match?(:emoji_reaction_name, @options[:emoji_reaction_name], @ng_rule.emoji_reaction_name) &&
-        text_match?(:emoji_reaction_origin_domain, @options[:emoji_reaction_origin_domain], @ng_rule.emoji_reaction_origin_domain)
+      result = enum_match?(:reaction_type, @options[:reaction_type], @ng_rule.reaction_type) &&
+               text_match?(:emoji_reaction_name, @options[:emoji_reaction_name], @ng_rule.emoji_reaction_name)
+
+      emoji_reaction_origin_domain = @options[:emoji_reaction_origin_domain] || Rails.configuration.x.local_domain
+      result && text_match?(:emoji_reaction_origin_domain, emoji_reaction_origin_domain, @ng_rule.emoji_reaction_origin_domain)
     else
       enum_match?(:reaction_type, @options[:reaction_type], @ng_rule.reaction_type)
     end
diff --git a/spec/models/admin/ng_rule_spec.rb b/spec/models/admin/ng_rule_spec.rb
index fb85e6e9bb..ccae8403b4 100644
--- a/spec/models/admin/ng_rule_spec.rb
+++ b/spec/models/admin/ng_rule_spec.rb
@@ -278,5 +278,35 @@ RSpec.describe Admin::NgRule do
 
       it_behaves_like 'matches rule', 'reaction'
     end
+
+    context 'with emoji reaction origin domain' do
+      let(:account) { Fabricate(:account, domain: 'example.com', uri: 'https://example.com/actor') }
+      let(:ng_rule) { Fabricate(:ng_rule, reaction_type: ['emoji_reaction'], emoji_reaction_origin_domain: 'ohagi.com') }
+
+      context 'when remote emoji matches domain' do
+        let(:options) { { uri: uri, recipient: Fabricate(:account), reaction_type: 'emoji_reaction', emoji_reaction_origin_domain: 'ohagi.com' } }
+
+        it_behaves_like 'matches rule', 'reaction'
+      end
+
+      context 'when remote emoji does not match domain' do
+        let(:options) { { uri: uri, recipient: Fabricate(:account), reaction_type: 'emoji_reaction', emoji_reaction_origin_domain: 'test.com' } }
+
+        it_behaves_like 'does not match rule'
+      end
+
+      context 'when local emoji' do
+        let(:options) { { uri: uri, recipient: Fabricate(:account), reaction_type: 'emoji_reaction', emoji_reaction_origin_domain: nil } }
+
+        it_behaves_like 'does not match rule'
+      end
+
+      context 'when local emoji but all options match' do
+        let(:ng_rule) { Fabricate(:ng_rule, reaction_type: ['emoji_reaction']) }
+        let(:options) { { uri: uri, recipient: Fabricate(:account), reaction_type: 'emoji_reaction', emoji_reaction_origin_domain: nil } }
+
+        it_behaves_like 'matches rule', 'reaction'
+      end
+    end
   end
 end