diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index 470e53fc1f..39b001c3d0 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -768,7 +768,6 @@ class TestGc < Test::Unit::TestCase
   end
 
   def test_gc_stress_at_startup
-    omit 'TODO: fixme later'
     assert_in_out_err([{"RUBY_DEBUG"=>"gc_stress"}], '', [], [], '[Bug #15784]', success: true, timeout: 60)
   end