diff --git a/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverClientSubnetTest.java b/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverClientSubnetTest.java
index 36cc4404f4..7b2c569558 100644
--- a/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverClientSubnetTest.java
+++ b/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverClientSubnetTest.java
@@ -63,6 +63,7 @@ public class DnsNameResolverClientSubnetTest {
                 .nameServerProvider(
                         new SingletonDnsServerAddressStreamProvider(SocketUtils.socketAddress("8.8.8.8", 53)))
                 .maxQueriesPerResolve(1)
-                .optResourceEnabled(false);
+                .optResourceEnabled(false)
+                .ndots(1);
     }
 }
diff --git a/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverTest.java b/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverTest.java
index 0a1a935e28..33a793bce7 100644
--- a/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverTest.java
+++ b/resolver-dns/src/test/java/io/netty/resolver/dns/DnsNameResolverTest.java
@@ -298,7 +298,8 @@ public class DnsNameResolverTest {
                 .channelType(NioDatagramChannel.class)
                 .maxQueriesPerResolve(1)
                 .decodeIdn(decodeToUnicode)
-                .optResourceEnabled(false);
+                .optResourceEnabled(false)
+                .ndots(1);
 
         if (dnsServerAddressStreamProvider == null) {
             builder.nameServerProvider(new SingletonDnsServerAddressStreamProvider(dnsServer.localAddress()));
@@ -821,7 +822,8 @@ public class DnsNameResolverTest {
                     .resolvedAddressTypes(ResolvedAddressTypes.IPV4_ONLY)
                     .channelType(NioDatagramChannel.class)
                     .queryTimeoutMillis(1000) // We expect timeouts if startDnsServer1 is false
-                    .optResourceEnabled(false);
+                    .optResourceEnabled(false)
+                    .ndots(1);
 
             builder.nameServerProvider(new SequentialDnsServerAddressStreamProvider(dnsServer1Address,
                     dnsServer2.localAddress()));
@@ -867,7 +869,8 @@ public class DnsNameResolverTest {
                     .resolvedAddressTypes(ResolvedAddressTypes.IPV6_PREFERRED)
                     .dnsQueryLifecycleObserverFactory(lifecycleObserverFactory)
                     .channelType(NioDatagramChannel.class)
-                    .optResourceEnabled(false);
+                    .optResourceEnabled(false)
+                    .ndots(1);
 
             builder.nameServerProvider(new SequentialDnsServerAddressStreamProvider(dnsServer1.localAddress(),
                     dnsServer2.localAddress()));
diff --git a/resolver-dns/src/test/java/io/netty/resolver/dns/SearchDomainTest.java b/resolver-dns/src/test/java/io/netty/resolver/dns/SearchDomainTest.java
index 4ef2dd19f0..4086906abf 100644
--- a/resolver-dns/src/test/java/io/netty/resolver/dns/SearchDomainTest.java
+++ b/resolver-dns/src/test/java/io/netty/resolver/dns/SearchDomainTest.java
@@ -48,7 +48,8 @@ public class SearchDomainTest {
             .channelType(NioDatagramChannel.class)
             .nameServerProvider(new SingletonDnsServerAddressStreamProvider(dnsServer.localAddress()))
             .maxQueriesPerResolve(1)
-            .optResourceEnabled(false);
+            .optResourceEnabled(false)
+            .ndots(1);
     }
 
     private TestDnsServer dnsServer;