diff --git a/packages/mitmproxy/src/lib/dns/base.js b/packages/mitmproxy/src/lib/dns/base.js
index 5cd2825..567193c 100644
--- a/packages/mitmproxy/src/lib/dns/base.js
+++ b/packages/mitmproxy/src/lib/dns/base.js
@@ -145,7 +145,7 @@ module.exports = class BaseDNS {
 
       return ret
     } catch (e) {
-      log.error(`[DNS-over-${this.dnsType} '${this.dnsName}'] DNS query error, hostname: ${hostname}${this.dnsServer ? `, dnsServer: ${this.dnsServer}` : ''}, cost: ${Date.now() - start} ms, error:`, e)
+      log.error(`[DNS-over-${this.dnsType} '${this.dnsName}'] DNS query error, hostname: ${hostname}${this.dnsServer ? `, dnsServer: ${this.dnsServer}` : ''}${this.dnsServerPort ? `:${this.dnsServerPort}` : ''}, cost: ${Date.now() - start} ms, error:`, e)
       return []
     }
   }
diff --git a/packages/mitmproxy/src/lib/dns/tcp.js b/packages/mitmproxy/src/lib/dns/tcp.js
index 0b49445..8b48afc 100644
--- a/packages/mitmproxy/src/lib/dns/tcp.js
+++ b/packages/mitmproxy/src/lib/dns/tcp.js
@@ -4,7 +4,7 @@ const dnsPacket = require('dns-packet')
 const randi = require('random-int')
 const BaseDNS = require('./base')
 
-const defaultPort = 53 // UDP类型的DNS服务默认端口号
+const defaultPort = 53 // TCP类型的DNS服务默认端口号
 
 module.exports = class DNSOverTCP extends BaseDNS {
   constructor (dnsName, cacheSize, preSetIpList, dnsServer, dnsServerPort) {