diff --git a/tools/robot/clientnet.js b/tools/robot/clientnet.js
index 162e7fd6..b7c95b4f 100644
--- a/tools/robot/clientnet.js
+++ b/tools/robot/clientnet.js
@@ -195,7 +195,7 @@ class ClientNet {
       console.log('unknown command');
       return;
     }
-    const msgBody = line.slice(line.indexOf(msgName) + msgName.length + 1);
+    const msgBody = line.slice(line.indexOf(msgName) + msgName.length);
     const msg = eval('({' + msgBody + '})');
     /*const msg = {};
     for (let i = 0; i < msgType.fieldsArray.length; ++i) {