diff --git a/src/node/RosTCP.js b/src/node/RosTCP.js
index cdfae0f6a..2f2b50133 100644
--- a/src/node/RosTCP.js
+++ b/src/node/RosTCP.js
@@ -6,15 +6,15 @@ var util = require('util');
 
 /**
  * Same as core Ros except supports TCP connections
- * also can receive a socket.io instance (options.socketio) or server intance (option.http)
+ * also can receive a socket.io instance (options.socketio) or server instance (option.http)
  * to connect to the front using socket.io
  * @private
  */
 function RosTCP(options) {
   options = options || {};
   if (!options.encoding) {
-    console.error('ROSLib uses utf8 encoding by default.' +
-      'It would be more efficent to use ascii (if possible)');
+    console.error('ROSLib uses utf8 encoding by default. ' +
+      'It would be more efficient to use ascii (if possible).');
   }
   this.encoding = options.encoding || 'utf8';
   Ros.call(this, options);