diff --git a/lib/stratum.js b/lib/stratum.js
index 6774697..7079684 100644
--- a/lib/stratum.js
+++ b/lib/stratum.js
@@ -262,6 +262,8 @@ var StratumServer = exports.Server = function StratumServer(ports, connectionTim
 
     //private members
 
+    var connectionTimeoutSeconds = connectionTimeout * 1000;
+
     var _this = this;
     var stratumClients = {};
     var subscriptionCounter = SubscriptionCounter();
@@ -306,7 +308,7 @@ var StratumServer = exports.Server = function StratumServer(ports, connectionTim
             // 'm not sure if that can ever happn but an if here doesn't hurt!
             var client = stratumClients[clientId];
             if (typeof(client) !== 'undefined') {
-                if (Date.now() - client.lastActivity > connectionTimeout){
+                if (Date.now() - client.lastActivity > connectionTimeoutSeconds){
                     client.socket.end();
                     return;
                 }