diff --git a/README.md b/README.md
index 3cad8a8..449607a 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,18 @@ Launch a Job
     // bool(true) if successful or throws a RuntimeException
 ```
 
+Launch a Job with Parameters
+------------
+
+```php
+    $job = $jenkins->launchJob("clone-deploy",array(
+            'name'=> <param_name>, 'value'=> <param_value>
+            'name'=> <param2_name>, 'value'=> <param2_value>
+        )
+    );
+    var_dump($job);
+    // bool(true) if successful or throws a RuntimeException
+```
 
 List the jobs of a given view
 -----------------------------
diff --git a/src/Jenkins.php b/src/Jenkins.php
index d91d4e3..dcd87ed 100755
--- a/src/Jenkins.php
+++ b/src/Jenkins.php
@@ -241,10 +241,15 @@ public function getExecutors($computer = '(master)')
      */
     public function launchJob($jobName, $parameters = array())
     {
-        if (0 === count($parameters)) {
-            $url = sprintf('%s/job/%s/build', $this->baseUrl, $jobName);
-        } else {
-            $url = sprintf('%s/job/%s/buildWithParameters', $this->baseUrl, $jobName);
+        $url = sprintf('%s/job/%s/build', $this->baseUrl, $jobName);
+
+        if ($parameters) {
+            $parameters = array(
+                'json' => json_encode(array(
+                        "parameter" => $parameters
+                    )
+                )
+            );
         }
 
         $curl = curl_init($url);
@@ -259,7 +264,6 @@ public function launchJob($jobName, $parameters = array())
         }
 
         curl_setopt($curl, \CURLOPT_HTTPHEADER, $headers);
-
         curl_exec($curl);
 
         $this->validateCurl($curl, sprintf('Error trying to launch job "%s" (%s)', $jobName, $url));