diff --git a/bootstraptest/test_insns.rb b/bootstraptest/test_insns.rb
index cb54d0d3f7..abfb53f7dc 100644
--- a/bootstraptest/test_insns.rb
+++ b/bootstraptest/test_insns.rb
@@ -438,3 +438,8 @@ tests.compact.each {|(insn, expr, *a)|
     assert_equal 'true', progn, 'trace_' + insn, *a
   end
 }
+
+assert_normal_exit("#{<<-"begin;"}\n#{<<-'end;'}")
+begin;
+  RubyVM::InstructionSequence.compile("", debug_level: 5)
+end;
diff --git a/test/ruby/test_iseq.rb b/test/ruby/test_iseq.rb
index 02c3967022..960b7b79fc 100644
--- a/test/ruby/test_iseq.rb
+++ b/test/ruby/test_iseq.rb
@@ -571,4 +571,12 @@ class TestISeq < Test::Unit::TestCase
     assert_not_nil(invokebuiltin)
     assert_equal([:func_ptr, :argc, :index, :name], invokebuiltin[1].keys)
   end
+
+  def test_iseq_option_debug_level
+    assert_raise(TypeError) {ISeq.compile("", debug_level: "")}
+    assert_ruby_status([], "#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      RubyVM::InstructionSequence.compile("", debug_level: 5)
+    end;
+  end
 end