diff --git a/packages/mitmproxy/src/lib/interceptor/impl/req/proxy.js b/packages/mitmproxy/src/lib/interceptor/impl/req/proxy.js
index 39d66f0..6e639db 100644
--- a/packages/mitmproxy/src/lib/interceptor/impl/req/proxy.js
+++ b/packages/mitmproxy/src/lib/interceptor/impl/req/proxy.js
@@ -124,7 +124,7 @@ module.exports = {
         rOptions.agent = rOptions.agent.unVerifySslAgent
         unVerifySsl = true
       }
-      res.setHeader('DS-Interceptor', `proxy: ${proxyTarget}, sni: ${interceptOpt.sni}`, (unVerifySsl ? ', unVerifySsl' : ''))
+      res.setHeader('DS-Interceptor', `proxy: ${proxyTarget}, sni: ${interceptOpt.sni}${unVerifySsl ? ', unVerifySsl' : ''}`)
       log.info('proxy intercept: hostname:', originHostname, ', target：', proxyTarget, ', sni replace servername:', rOptions.servername, (unVerifySsl ? ', unVerifySsl' : ''))
     } else {
       res.setHeader('DS-Interceptor', `proxy: ${proxyTarget}`)
diff --git a/packages/mitmproxy/src/lib/interceptor/impl/req/sni.js b/packages/mitmproxy/src/lib/interceptor/impl/req/sni.js
index 0455286..816c64f 100644
--- a/packages/mitmproxy/src/lib/interceptor/impl/req/sni.js
+++ b/packages/mitmproxy/src/lib/interceptor/impl/req/sni.js
@@ -12,7 +12,7 @@ module.exports = {
       rOptions.agent = rOptions.agent.unVerifySslAgent
       unVerifySsl = true
     }
-    res.setHeader('DS-Interceptor', `sni: ${interceptOpt.sni}`, (unVerifySsl ? ', unVerifySsl' : ''))
+    res.setHeader('DS-Interceptor', `sni: ${interceptOpt.sni}${unVerifySsl ? ', unVerifySsl' : ''}`)
 
     log.info('sni intercept: sni replace servername:', rOptions.hostname, '➜', rOptions.servername, (unVerifySsl ? ', unVerifySsl' : ''))
     return true