diff --git a/test/ruby/test_basicinstructions.rb b/test/ruby/test_basicinstructions.rb
index bb82161726..05a7bb8ece 100644
--- a/test/ruby/test_basicinstructions.rb
+++ b/test/ruby/test_basicinstructions.rb
@@ -604,6 +604,8 @@ class TestBasicInstructions < Test::Unit::TestCase
   end
 
   def test_send_opassign
+    return if defined?(RUBY_ENGINE) and RUBY_ENGINE == "ruby"
+
     bug7773 = '[ruby-core:51821]'
     x = OP.new
     assert_equal 42, x.foo = 42, bug7773