diff --git a/script/make-pretty b/script/make-pretty
index 1f7edae13..b1f444ff1 100755
--- a/script/make-pretty
+++ b/script/make-pretty
@@ -95,6 +95,7 @@ readonly OT_CLANG_TIDY_BUILD_OPTS=(
     '-DOT_DHCP6_SERVER=ON'
     '-DOT_DIAGNOSTIC=ON'
     '-DOT_DNS_CLIENT=ON'
+    '-DOT_DNSSD_SERVER=ON'
     '-DOT_DUA=ON'
     '-DOT_MLR=ON'
     '-DOT_ECDSA=ON'
diff --git a/src/core/net/dnssd_server.cpp b/src/core/net/dnssd_server.cpp
index a484366e4..6738994d6 100644
--- a/src/core/net/dnssd_server.cpp
+++ b/src/core/net/dnssd_server.cpp
@@ -43,8 +43,6 @@
 #include "net/srp_server.hpp"
 #include "net/udp6.hpp"
 
-using ot::Encoding::BigEndian::HostSwap16;
-
 namespace ot {
 namespace Dns {
 namespace ServiceDiscovery {