diff --git a/src/TamerLib/Classes/JobManager.php b/src/TamerLib/Classes/JobManager.php
index 660fd92..2e69526 100644
--- a/src/TamerLib/Classes/JobManager.php
+++ b/src/TamerLib/Classes/JobManager.php
@@ -145,7 +145,10 @@
 
             try
             {
-                $this->redis_client->close();
+                if($this->redis_client instanceof Redis)
+                {
+                    $this->redis_client->close();
+                }
             }
             catch(Exception $e)
             {