diff --git a/test/ruby/test_super.rb b/test/ruby/test_super.rb
index cf7580ab00..bb78ab516f 100644
--- a/test/ruby/test_super.rb
+++ b/test/ruby/test_super.rb
@@ -102,11 +102,11 @@ class TestSuper < Test::Unit::TestCase
   def test_optional2
     assert_raise(ArgumentError) do
       # call Base#optional with 2 arguments; the 2nd arg is supplied
-      assert_equal(9, Optional2.new.optional(9))
+      Optional2.new.optional(9)
     end
     assert_raise(ArgumentError) do
       # call Base#optional with 2 arguments
-      assert_equal(9, Optional2.new.optional(9, 2))
+      Optional2.new.optional(9, 2)
     end
   end
   def test_optional3