diff --git a/package.json b/package.json
index 549192e..a764ee6 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "shadowsocks-manager-wireguard",
-  "version": "0.31.0",
+  "version": "0.31.3",
   "description": "",
   "main": "index.js",
   "author": "Gu Yuteng <igyteng@gmail.com>",
diff --git a/wireguard.js b/wireguard.js
index 254b6ec..ba69216 100644
--- a/wireguard.js
+++ b/wireguard.js
@@ -248,6 +248,9 @@ const getClientIp = async port => {
   }
   const result = await runCommand(`wg show ${ interface } dump | grep ${ account }`);
   const client = result.split(/\s/)[2];
+  if(client.trim() === '(none)') {
+    return Promise.resolve([]);
+  }
   return Promise.resolve([ client.split(':')[0] ]);
 };