diff --git a/lib/hx509/test_chain.in b/lib/hx509/test_chain.in
index ae7260bb6..13a26a8f5 100644
--- a/lib/hx509/test_chain.in
+++ b/lib/hx509/test_chain.in
@@ -67,6 +67,11 @@ echo "sub-cert -> sub-ca -> root"
 	chain:FILE:$srcdir/data/ca.crt \
 	anchor:FILE:$srcdir/data/ca.crt > /dev/null || exit 1
 
+echo "sub-cert -> sub-ca"
+./hxtool verify --missing-revoke \
+	cert:FILE:$srcdir/data/sub-cert.crt \
+	anchor:FILE:$srcdir/data/sub-ca.crt > /dev/null || exit 1
+
 echo "sub-cert -> sub-ca -> root"
 ./hxtool verify --missing-revoke \
 	cert:FILE:$srcdir/data/sub-cert.crt \