diff --git a/lib/hubspot/hubspot.js b/lib/hubspot/hubspot.js
index 8d3bfd5..75e9535 100644
--- a/lib/hubspot/hubspot.js
+++ b/lib/hubspot/hubspot.js
@@ -62,7 +62,6 @@ hubspotAPI.prototype.execute = function (verbParams, path, availableParams, give
   var body;
   var currentParam;
   var parsedResponse;
-  var requestOptions;
 
   var verb = verbParams && verbParams.verb || verbParams;
   var headers = {
@@ -75,6 +74,12 @@ hubspotAPI.prototype.execute = function (verbParams, path, availableParams, give
 
   var finalParams = {};
 
+  var requestOptions = {
+    method: verb,
+    headers: headers,
+    encoding: null
+  };
+
   for (var i = 0; i < availableParams.length; i++) {
     currentParam = availableParams[i];
     if (typeof givenParams[currentParam] !== 'undefined')
@@ -82,23 +87,19 @@ hubspotAPI.prototype.execute = function (verbParams, path, availableParams, give
   }
 
   /**
-   * For OAuth: &access_token=TOKEN
+   * For OAuth 2.0: Set header "Authorization" = "Bearer " + TOKEN
    * For API Keys: &hapikey=KEY
-   * @see http://developers.hubspot.com/auth/oauth_overview
+   * @see http://developers.hubspot.com/docs/methods/auth/oauth-overview
    */
   if (this.api_key) {
-    authParams.hapikey = this.api_key;
+    finalParams.hapikey = this.api_key;
   }
 
   if (this.access_token) {
-    authParams.access_token = this.access_token;
+    requestOptions.headers["Authorization"] = "Bearer " + this.access_token;
   }
 
-  requestOptions = {
-    method: verb,
-    headers: headers,
-    encoding: null
-  };
+
 
   // some endpoints use array-like parameters that must be stringified.
   // also must user querystring instead of qs.
@@ -119,9 +120,6 @@ hubspotAPI.prototype.execute = function (verbParams, path, availableParams, give
       requestOptions[verbParams.json ? 'json' : 'form'] = finalParams;
 
       uri = uri + "?" + qs.stringify(authParams);
-  } else {
-    var allParams = _.merge(authParams, finalParams);
-
   }
 
   requestOptions.uri = uri;