diff --git a/backend/spec/tasks/nico_sync_spec.rb b/backend/spec/tasks/nico_sync_spec.rb
index 696df06..3788917 100644
--- a/backend/spec/tasks/nico_sync_spec.rb
+++ b/backend/spec/tasks/nico_sync_spec.rb
@@ -17,7 +17,7 @@ RSpec.describe 'nico:sync' do
 
   def create_nico_sanitisation_rules!
     TagNameSanitisationRule.create!(priority: 20, source_pattern: '\\?', replacement: '_')
-    TagNameSanitisationRule.create!(priority: 40, source_pattren: '_$', replacement: '')
+    TagNameSanitisationRule.create!(priority: 40, source_pattern: '_$', replacement: '')
   end
 
   it '既存 post を見つけて、nico tag と linked tag を追加し、差分が出たら bot を付ける' do