diff --git a/src/job-executor.js b/src/job-executor.js
index cdcdba23d..fc17590fc 100644
--- a/src/job-executor.js
+++ b/src/job-executor.js
@@ -141,7 +141,7 @@ export default class JobExecutor {
               event: 'jobCall.end',
               runJobId,
               runCallId,
-              error: reason
+              error: {...reason, message: reason.message}
             })
 
             call.error = reason