diff --git a/src/GO/Job.php b/src/GO/Job.php
index 987b8d3..b666930 100644
--- a/src/GO/Job.php
+++ b/src/GO/Job.php
@@ -157,6 +157,8 @@ public function __construct($command, $args = [], $id = null)
         } else {
             if (is_string($command)) {
                 $this->id = md5($command);
+            } elseif (is_array($command)) {
+                $this->id = md5(serialize($command));
             } else {
                 /* @var object $command */
                 $this->id = spl_object_hash($command);
diff --git a/tests/GO/JobTest.php b/tests/GO/JobTest.php
index 7720e45..8d52bc0 100644
--- a/tests/GO/JobTest.php
+++ b/tests/GO/JobTest.php
@@ -14,6 +14,9 @@ public function testShouldAlwaysGenerateAnId()
             return true;
         });
         $this->assertTrue(is_string($job2->getId()));
+
+        $job3 = new Job(['MyClass', 'myMethod']);
+        $this->assertTrue(is_string($job3->getId()));
     }
 
     public function testShouldGenerateIdFromSignature()
@@ -23,6 +26,9 @@ public function testShouldGenerateIdFromSignature()
 
         $job2 = new Job('whoami');
         $this->assertNotEquals($job1->getId(), $job2->getId());
+
+        $job3 = new Job(['MyClass', 'myMethod']);
+        $this->assertNotEquals($job1->getId(), $job3->getId());
     }
 
     public function testShouldAllowCustomId()
@@ -31,6 +37,9 @@ public function testShouldAllowCustomId()
 
         $this->assertNotEquals(md5('ls'), $job->getId());
         $this->assertEquals('aCustomId', $job->getId());
+
+        $job2 = new Job(['MyClass', 'myMethod'], null, 'myCustomId');
+        $this->assertEquals('myCustomId', $job2->getId());
     }
 
     public function testShouldKnowIfDue()