diff --git a/bin/tests/system/cookie/tests.sh b/bin/tests/system/cookie/tests.sh
index ff42b78bd4..fdb3306c03 100755
--- a/bin/tests/system/cookie/tests.sh
+++ b/bin/tests/system/cookie/tests.sh
@@ -338,6 +338,23 @@ grep "status: NOERROR," dig.out.test$n >/dev/null || ret=1
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status + ret))
 
+n=$((n + 1))
+echo_i "Restart NS4 with -T cookiealwaysvalid ($n)"
+stop_server ns4
+touch ns4/named.cookiealwaysvalid
+start_server --noclean --restart --port ${PORT} ns4 || ret=1
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=$((status + ret))
+
+n=$((n + 1))
+echo_i "test NS6 cookie on NS4 with -T cookiealwaysvalid (expect success) ($n)"
+ret=0
+$DIG $DIGOPTS +cookie=$ns6cookie -b 10.53.0.4 +nobadcookie soa . @10.53.0.4 >dig.out.test$n || ret=1
+grep "; COOKIE:.*(good)" dig.out.test$n >/dev/null || ret=1
+grep "status: NOERROR," dig.out.test$n >/dev/null || ret=1
+if [ $ret != 0 ]; then echo_i "failed"; fi
+status=$((status + ret))
+
 n=$((n + 1))
 echo_i "check that test server is correctly configured ($n)"
 ret=0
diff --git a/bin/tests/system/cookie/tests_sh_cookie.py b/bin/tests/system/cookie/tests_sh_cookie.py
index 768f8601ed..1c9e8280f5 100644
--- a/bin/tests/system/cookie/tests_sh_cookie.py
+++ b/bin/tests/system/cookie/tests_sh_cookie.py
@@ -19,6 +19,7 @@ pytestmark = pytest.mark.extra_artifacts(
         "ans*/ans.run",
         "ans*/query.log",
         "ns1/named_dump.db*",
+        "ns4/named.cookiealwaysvalid",
     ]
 )