diff --git a/test/prism/unescape_test.rb b/test/prism/unescape_test.rb
index 35e1952cb2b..24a9e3f6bc9 100644
--- a/test/prism/unescape_test.rb
+++ b/test/prism/unescape_test.rb
@@ -2,7 +2,7 @@
 
 require_relative "test_helper"
 
-return if RUBY_VERSION < "3.1.0"
+return if RUBY_VERSION < "3.1.0" || Prism::BACKEND == :FFI
 
 module Prism
   class UnescapeTest < TestCase