diff --git a/lib/oauth.js b/lib/oauth.js
index 50ccd95a..be3c6d63 100644
--- a/lib/oauth.js
+++ b/lib/oauth.js
@@ -30,6 +30,7 @@ exports.OAuth= function(requestUrl, accessUrl, consumerKey, consumerSecret, vers
                                    "User-Agent" : "Node authentication"}
   this._clientOptions= this._defaultClientOptions= {"requestTokenHttpMethod": "POST",
                                                     "accessTokenHttpMethod": "POST"};
+  this._oauthParameterSeperator = ",";
 };
 
 exports.OAuthEcho= function(realm, verify_credentials, consumerKey, consumerSecret, version, signatureMethod, nonceSize, customHeaders) {
@@ -48,6 +49,7 @@ exports.OAuthEcho= function(realm, verify_credentials, consumerKey, consumerSecr
   this._headers= customHeaders || {"Accept" : "*/*",
                                    "Connection" : "close",
                                    "User-Agent" : "Node authentication"};
+  this._oauthParameterSeperator = ",";
 }
 
 exports.OAuthEcho.prototype = exports.OAuth.prototype;
@@ -118,11 +120,11 @@ exports.OAuth.prototype._buildAuthorizationHeaders= function(orderedParameters)
      // Whilst the all the parameters should be included within the signature, only the oauth_ arguments
      // should appear within the authorization header.
      if( this._isParameterNameAnOAuthParameter(orderedParameters[i][0]) ) {
-      authHeader+= "" + this._encodeData(orderedParameters[i][0])+"=\""+ this._encodeData(orderedParameters[i][1])+"\",";
+      authHeader+= "" + this._encodeData(orderedParameters[i][0])+"=\""+ this._encodeData(orderedParameters[i][1])+"\""+ this._oauthParameterSeperator;
      }
   }
 
-  authHeader= authHeader.substring(0, authHeader.length-1);
+  authHeader= authHeader.substring(0, authHeader.length-this._oauthParameterSeperator.length);  
   return authHeader;
 }