diff --git a/lib/annotate/annotate_models.rb b/lib/annotate/annotate_models.rb
index fc503839..340495b4 100644
--- a/lib/annotate/annotate_models.rb
+++ b/lib/annotate/annotate_models.rb
@@ -375,7 +375,7 @@ def annotate_one_file(file_name, info_block, position, options = {})
       old_header = old_content.match(header_pattern).to_s
       new_header = info_block.match(header_pattern).to_s
 
-      column_pattern = /^#[\t ]+[\w\*\.`]+[\t ]+.+$/
+      column_pattern = /^#[\t ]+[\w\*\.`]+(?:\([\p{Letter}\p{Number}]*\))?[\t ]+.+$/
       old_columns = old_header && old_header.scan(column_pattern).sort
       new_columns = new_header && new_header.scan(column_pattern).sort
 
diff --git a/spec/lib/annotate/annotate_models_spec.rb b/spec/lib/annotate/annotate_models_spec.rb
index c813139a..1e4520d0 100644
--- a/spec/lib/annotate/annotate_models_spec.rb
+++ b/spec/lib/annotate/annotate_models_spec.rb
@@ -68,7 +68,8 @@ def mock_column(name, type, options = {})
       limit: nil,
       null: false,
       default: nil,
-      sql_type: type
+      sql_type: type,
+      comment: nil
     }
 
     stubs = default_options.dup
@@ -2602,6 +2603,34 @@ def annotate_one_file(options = {})
           expect(File.read(@model_file_name)).to eq("#{@schema_info}#{@file_content}")
         end
       end
+
+      context 'of unicode comment' do
+        before do
+          @klass = mock_class(:users,
+                              :id,
+                              [
+                                mock_column(:id, :integer),
+                                mock_column(:name, :string, limit: 50, comment: '名前１')
+                              ])
+          @schema_info = AnnotateModels.get_schema_info(@klass, '== Schema Info', with_comment: true)
+          Annotate::Helpers.reset_options(Annotate::Constants::ALL_ANNOTATE_OPTIONS)
+
+          annotate_one_file
+        end
+
+        it 'should update' do
+          klass = mock_class(:users,
+                             :id,
+                             [
+                               mock_column(:id, :integer),
+                               mock_column(:name, :string, null: true, comment: '名前１')
+                             ])
+          @schema_info = AnnotateModels.get_schema_info(klass, '== Schema Info', with_comment: true)
+          annotate_one_file
+
+          expect(File.read(@model_file_name)).to eq("#{@schema_info}#{@file_content}")
+        end
+      end
     end
 
     describe 'with existing annotation => :before' do