diff --git a/src/Job.php b/src/Job.php
index 1216ee7..6a63bbc 100644
--- a/src/Job.php
+++ b/src/Job.php
@@ -36,7 +36,7 @@ abstract class Job
      */
     public function arguments()
     {
-        return $this->args;
+        return $this->args ?: [];
     }
 
     /**
@@ -58,5 +58,15 @@ abstract class Job
         return $this;
     }
 
+    /**
+     * @param Job $job
+     *
+     * @return bool
+     */
+    public function equals(Job $job)
+    {
+        return $this->name() === $job->name() && $this->arguments() === $job->arguments();
+    }
+
     abstract public function perform();
 }
diff --git a/src/Resque.php b/src/Resque.php
index 1fe3715..2dd5b26 100644
--- a/src/Resque.php
+++ b/src/Resque.php
@@ -59,7 +59,7 @@ class Resque
         $queue = new Queue($job->queue());
 
         foreach ($queue->jobs() as $queuedJob) {
-            if (true === $this->isSameJob($job, $queuedJob)) {
+            if (true === $job->equals($queuedJob)) {
                 return ($trackStatus) ? new \Resque_Job_Status($queuedJob->job->payload['id']) : null;
             }
         }
@@ -84,16 +84,4 @@ class Resque
     {
         return \Resque::fork();
     }
-
-    /**
-     * @param Job $job
-     * @param Job $queuedJob
-     *
-     * @return bool
-     */
-    protected function isSameJob(Job $job, Job $queuedJob)
-    {
-        return $job->name() === $queuedJob->name()
-            && count(array_intersect($job->arguments(), $queuedJob->arguments())) === count($job->arguments());
-    }
 }