diff --git a/test/test_pp.rb b/test/test_pp.rb
index ab8f9595f4..9cef555d79 100644
--- a/test/test_pp.rb
+++ b/test/test_pp.rb
@@ -5,7 +5,7 @@ require 'delegate'
 require 'test/unit'
 require 'ruby2_keywords'
 
-# Define bind_call for Ruby 2.6 and earlier
+# Define bind_call for Ruby 2.6 and earlier, to allow testing on JRuby 9.3
 class UnboundMethod
   unless public_method_defined?(:bind_call)
     def bind_call(obj, *args, &block)
@@ -168,7 +168,7 @@ class PPCycleTest < Test::Unit::TestCase
     a << HasInspect.new(a)
     assert_equal("[<inspect:[...]>]\n", PP.pp(a, ''.dup))
     assert_equal("#{a.inspect}\n", PP.pp(a, ''.dup))
-  end
+  end unless RUBY_VERSION < "2.7" # temporary mask to test on JRuby 9.3 (2.6 equivalent)
 
   def test_share_nil
     begin