diff --git a/src/embed_tests/Codecs.cs b/src/embed_tests/Codecs.cs
index c9e83f03a..be416bc15 100644
--- a/src/embed_tests/Codecs.cs
+++ b/src/embed_tests/Codecs.cs
@@ -285,7 +285,6 @@ public void IterableDecoderTest()
         }
 
         // regression for https://github.com/pythonnet/pythonnet/issues/1427
-        [Ignore("https://github.com/pythonnet/pythonnet/issues/1256")]
         [Test]
         public void PythonRegisteredDecoder_NoStackOverflowOnSystemType()
         {