diff --git a/tests/hwsim/test_dpp.py b/tests/hwsim/test_dpp.py
index fa12c43de..e28e04f85 100644
--- a/tests/hwsim/test_dpp.py
+++ b/tests/hwsim/test_dpp.py
@@ -5628,8 +5628,7 @@ def dpp_sign_cert(cacert, cakey, csr_der):
     cert.gmtime_adj_notBefore(-10)
     cert.gmtime_adj_notAfter(100000)
     cert.set_pubkey(csr.get_pubkey())
-    dn = cert.get_subject()
-    dn.CN = "dpp-tls-test"
+    dn = csr.get_subject()
     cert.set_subject(dn)
     cert.set_version(2)
     cert.add_extensions([