diff --git a/src/JobPipeline.php b/src/JobPipeline.php
index 2781ef0..137f34e 100644
--- a/src/JobPipeline.php
+++ b/src/JobPipeline.php
@@ -72,7 +72,7 @@ class JobPipeline implements ShouldQueue
             try {
                 $result = app()->call($job);
             } catch (Throwable $exception) {
-                if (method_exists(get_class($job[0]), 'failed')) {
+                if (is_array($job) && method_exists(get_class($job[0]), 'failed')) {
                     call_user_func_array([$job[0], 'failed'], [$exception]);
                 } else {
                     throw $exception;