diff --git a/spec/models/tag_spec.rb b/spec/models/tag_spec.rb
index 2496946cbec405249fd5343233ed97bda01a2460..7c574eabe9597f7d6716e7ad668542a57e8eb78e 100644
--- a/spec/models/tag_spec.rb
+++ b/spec/models/tag_spec.rb
@@ -11,6 +11,10 @@ RSpec.describe Tag, type: :model do
     it 'does not match URLs with hashtag-like anchors' do
       expect(subject.match('https://en.wikipedia.org/wiki/Ghostbusters_(song)#Lawsuit')).to be_nil
     end
+
+    it 'matches #ａｅｓｔｈｅｔｉｃ' do
+      expect(subject.match('this is #ａｅｓｔｈｅｔｉｃ')).to_not be_nil
+    end
   end
 
   describe '.search_for' do