diff --git a/bin/tests/system/nsec3/ns3/named.conf.in b/bin/tests/system/nsec3/ns3/named.conf.in
index de097744ba..022e9421bc 100644
--- a/bin/tests/system/nsec3/ns3/named.conf.in
+++ b/bin/tests/system/nsec3/ns3/named.conf.in
@@ -46,6 +46,7 @@ options {
 	listen-on-v6 { none; };
 	allow-transfer { any; };
 	recursion no;
+	dnssec-validation no;
 };
 
 key rndc_key {
diff --git a/bin/tests/system/nsec3/ns3/named2.conf.in b/bin/tests/system/nsec3/ns3/named2.conf.in
index 084bba3f0b..4e6d644a3d 100644
--- a/bin/tests/system/nsec3/ns3/named2.conf.in
+++ b/bin/tests/system/nsec3/ns3/named2.conf.in
@@ -46,6 +46,7 @@ options {
 	listen-on-v6 { none; };
 	allow-transfer { any; };
 	recursion no;
+	dnssec-validation no;
 };
 
 key rndc_key {
diff --git a/bin/tests/system/tsig/ns1/named.conf.in b/bin/tests/system/tsig/ns1/named.conf.in
index de16ccf493..120cd9062f 100644
--- a/bin/tests/system/tsig/ns1/named.conf.in
+++ b/bin/tests/system/tsig/ns1/named.conf.in
@@ -20,6 +20,7 @@ options {
 	listen-on { 10.53.0.1; };
 	listen-on-v6 { none; };
 	recursion yes;
+	dnssec-validation no;
 	notify no;
 };