diff --git a/lib/util/index.js b/lib/util/index.js
index ae129e2..fc5a3d3 100644
--- a/lib/util/index.js
+++ b/lib/util/index.js
@@ -15,6 +15,6 @@ exports.Logger = require('./logger');
 // Create a message ID starting from local time
 function createMessageId() {
     var time = new BigInteger(new Date().getTime().toString());
-    time = time.divide(new BigInteger(1000..toString()));
+    time = time.divide(new BigInteger((1000).toString()));
     return time.shiftLeft(32).toString();
 }
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