1 files changed, 2 insertions, 1 deletions
diff --git a/test/dbm/test_dbm.rb b/test/dbm/test_dbm.rb
index 874b326404..d7cb5497fc 100644
--- a/test/dbm/test_dbm.rb
+++ b/test/dbm/test_dbm.rb
@@ -625,9 +625,10 @@ if defined? DBM
     end
 
     def test_freeze
+      expected_error = defined?(FrozenError) ? FrozenError : RuntimeError
       DBM.open("#{@tmproot}/a") {|d|
         d.freeze
-        assert_raise(FrozenError) { d["k"] = "v" }
+        assert_raise(expected_error) { d["k"] = "v" }
       }
     end
   end