diff --git a/bin/tests/system/rpzextra/ns3/named.args b/bin/tests/system/rpzextra/ns3/named.args
index 7b5a9edf70..76936389a6 100644
--- a/bin/tests/system/rpzextra/ns3/named.args
+++ b/bin/tests/system/rpzextra/ns3/named.args
@@ -1 +1 @@
- -m record -c named.conf -d 99 -D rpzextra-ns1 -T maxcachesize=2097152
+ -m record -c named.conf -d 99 -D rpzextra-ns3 -T maxcachesize=2097152