diff --git a/bin/tests/system/addzone/tests.sh b/bin/tests/system/addzone/tests.sh
index 97f4205a6b..555a37bb22 100644
--- a/bin/tests/system/addzone/tests.sh
+++ b/bin/tests/system/addzone/tests.sh
@@ -141,9 +141,11 @@ do
 	sleep 1
 done
 $RNDC -c ../common/rndc.conf -s 10.53.0.2 -p 9953 delzone inlineslave.example 2>&1 > rndc.out2.test$n
+test -f inlineslave.bk ||
 grep '^inlineslave.bk$' rndc.out2.test$n > /dev/null || {
 	echo "I:failed to report inlineslave.bk"; ret=1;
 }
+test ! -f inlineslave.bk.signed ||
 grep '^inlineslave.bk.signed$' rndc.out2.test$n > /dev/null || {
 	echo "I:failed to report inlineslave.bk.signed"; ret=1;
 }