diff --git a/tests/eth2/beacon/chains/test_chains.py b/tests/eth2/beacon/chains/test_chains.py
index 32347ab65a..394fb52249 100644
--- a/tests/eth2/beacon/chains/test_chains.py
+++ b/tests/eth2/beacon/chains/test_chains.py
@@ -10,4 +10,4 @@
 )
 def test_chain_class_well_defined(chain_klass):
     chain = chain_klass(None)
-    assert chain.sm_configuration is not ()
+    assert chain.sm_configuration is not () and chain.sm_configuration is not None