diff --git a/lib/oauth.js b/lib/oauth.js
index 50dccf99..6557dc33 100644
--- a/lib/oauth.js
+++ b/lib/oauth.js
@@ -308,7 +308,7 @@ exports.OAuth.prototype._prepareParameters= function( oauth_token, oauth_token_s
 exports.OAuth.prototype._performSecureRequest= function( oauth_token, oauth_token_secret, method, url, extra_params, post_body, post_content_type,  callback ) {
   var orderedParameters= this._prepareParameters(oauth_token, oauth_token_secret, method, url, extra_params);
 
-  if( !post_content_type ) {
+  if( !post_content_type && (method == "POST" || method == "PUT")) {
     post_content_type= "application/x-www-form-urlencoded";
   }
   var parsedUrl= URL.parse( url, false );
@@ -359,7 +359,9 @@ exports.OAuth.prototype._performSecureRequest= function( oauth_token, oauth_toke
       headers["Content-length"]= 0;
   }
 
-  headers["Content-Type"]= post_content_type;
+  if( post_content_type ) {
+      headers["Content-Type"]= post_content_type;
+  }
 
   var path;
   if( !parsedUrl.pathname  || parsedUrl.pathname == "" ) parsedUrl.pathname ="/";