diff --git a/test/rubocop/cop/minitest/assert_with_expected_argument_test.rb b/test/rubocop/cop/minitest/assert_with_expected_argument_test.rb
index 727dada7..73bb75a7 100644
--- a/test/rubocop/cop/minitest/assert_with_expected_argument_test.rb
+++ b/test/rubocop/cop/minitest/assert_with_expected_argument_test.rb
@@ -79,7 +79,7 @@ def test_do_something
   end
 
   def test_does_not_register_offense_when_using_assert_equal_with_two_arguments
-    assert_no_offenses(<<~'RUBY')
+    assert_no_offenses(<<~RUBY)
       class FooTest < Minitest::Test
         def test_do_something
           assert_equal(3, actual)