diff --git a/bin/tests/system/checkzone/tests.sh b/bin/tests/system/checkzone/tests.sh
index 1f340a3fcc..98d6ac37f4 100644
--- a/bin/tests/system/checkzone/tests.sh
+++ b/bin/tests/system/checkzone/tests.sh
@@ -139,28 +139,28 @@ status=$((status + ret))
 echo_i "checking that expirations that loop using serial arithmetic are handled ($n)"
 ret=0
 q=-q
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
-test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
+test $ret -eq 1 || $CHECKZONE $q dyn.example.net zones/crashzone.db >test.out.$n 2>&1 || ret=1
 n=$((n + 1))
 if [ $ret != 0 ]; then echo_i "failed"; fi
 status=$((status + ret))