diff --git a/lib/hx509/test_ca.in b/lib/hx509/test_ca.in
index b660df88d..0a1b0368d 100644
--- a/lib/hx509/test_ca.in
+++ b/lib/hx509/test_ca.in
@@ -408,4 +408,17 @@ ${hxtool} issue-certificate \
 	  --subject="cn=cert-ee-crl-uri" \
 	  --certificate="FILE:cert-ee.pem" || exit 1
 
+echo "issue null subject cert"
+${hxtool} issue-certificate \
+	  --ca-certificate=FILE:cert-ca.pem \
+	  --req="pkcs10-request.der" \
+	  --subject="" \
+	  --email="lha@test.h5l.se" \
+	  --certificate="FILE:cert-ee.pem" || exit 1
+
+echo "verify certificate null subject"
+${hxtool} verify --missing-revoke \
+	cert:FILE:cert-ee.pem \
+	anchor:FILE:cert-ca.pem > /dev/null || exit 1
+
 exit 0