diff --git a/src/Jenkins.php b/src/Jenkins.php
index 2d7ede2..90e9446 100755
--- a/src/Jenkins.php
+++ b/src/Jenkins.php
@@ -344,11 +344,11 @@ public function getJob(string $jobName): Job
      * @param string $jobName
      * @param string $tree
      *
-     * @return Job
+     * @return DataObject
      */
-    public function getJobParams(string $jobName, string $tree = ''): Job
+    public function getJobParams(string $jobName, string $tree = ''): DataObject
     {
-        $tree = $tree ?: 'property[parameterDefinitions[description,name,type,choices]]';
+        $tree = $tree ?: 'property[parameterDefinitions[description,name,type,choices,defaultParameterValue]]';
         $url  = $this->buildUrl('/job/%s/api/json?tree=%s', $jobName, $tree);
         $cli  = $this->getHttpClient()->get($url);
 
@@ -356,9 +356,14 @@ public function getJobParams(string $jobName, string $tree = ''): Job
             throw new RuntimeException(sprintf('Error on get information for job %s', $jobName));
         }
 
-        $infos = $cli->getDataObject();
+        $data = $cli->getArrayData();
 
-        return new Jenkins\Job($infos, $this);
+        $params = [];
+        if (isset($data['property'])) {
+            $params = Job::fmtBuildParams($data['property']);
+        }
+
+        return DataObject::new($params);
     }
 
     /**
diff --git a/src/Jenkins/Job.php b/src/Jenkins/Job.php
index 3b9ba90..1949cce 100755
--- a/src/Jenkins/Job.php
+++ b/src/Jenkins/Job.php
@@ -37,8 +37,8 @@ class Job
      */
     public function __construct(DataObject $job, Jenkins $jenkins)
     {
-        $this->job = $job;
-        $this->jenkins  = $jenkins;
+        $this->job     = $job;
+        $this->jenkins = $jenkins;
     }
 
     /**
@@ -76,17 +76,27 @@ public function getName(): string
      * @return array
      */
     public function getParametersDefinitions(): array
+    {
+        return self::fmtBuildParams($this->job->property);
+    }
+
+    /**
+     * @param array $jobProperty
+     *
+     * @return array
+     */
+    public static function fmtBuildParams(array $jobProperty): array
     {
         $parameters = [];
 
-        foreach ($this->job->property as $action) {
+        foreach ($jobProperty as $action) {
             if (!isset($action['parameterDefinitions'])) {
                 continue;
             }
 
             foreach ($action['parameterDefinitions'] as $paramDefinition) {
                 $description = $paramDefinition['description'] ?? null;
-                $paramType = $paramDefinition['type'] ?? null;
+                $paramType   = $paramDefinition['type'] ?? null;
 
                 $default = $paramDefinition['defaultParameterValue']['value'] ?? null;
                 $choices = $paramDefinition['choices'] ?? null;