diff --git a/test/prism/onigmo_test.rb b/test/prism/onigmo_test.rb
index 8297bc156e..c8aa2317b8 100644
--- a/test/prism/onigmo_test.rb
+++ b/test/prism/onigmo_test.rb
@@ -1,5 +1,7 @@
 # frozen_string_literal: true
 
+return if RUBY_ENGINE != "ruby"
+
 require_relative "test_helper"
 
 begin