diff --git a/bin/tests/system/rndc/tests.sh b/bin/tests/system/rndc/tests.sh
index 990ade48d3..141fa7b3e5 100644
--- a/bin/tests/system/rndc/tests.sh
+++ b/bin/tests/system/rndc/tests.sh
@@ -538,9 +538,9 @@ status=`expr $status + $ret`
 n=`expr $n + 1`
 echo "I:test read-only control channel access ($n)"
 ret=0
-$RNDC -s 10.53.0.5 -p 9953 -c ../common/rndc.conf status > /dev/null 2>&1 || ret=1
-$RNDC -s 10.53.0.5 -p 9953 -c ../common/rndc.conf nta -dump > /dev/null 2>&1 || ret=1
-$RNDC -s 10.53.0.5 -p 9953 -c ../common/rndc.conf reconfig > /dev/null 2>&1 && ret=1
+$RNDC -s 10.53.0.5 -p 9953 -c ../common/rndc.conf status > rndc.out.1.test$n 2>&1 || ret=1
+$RNDC -s 10.53.0.5 -p 9953 -c ../common/rndc.conf nta -dump > rndc.out.2.test$n 2>&1 || ret=1
+$RNDC -s 10.53.0.5 -p 9953 -c ../common/rndc.conf reconfig > rndc.out.3.test$n 2>&1 && ret=1
 if [ $ret != 0 ]; then echo "I:failed"; fi
 status=`expr $status + $ret`