diff --git a/src/components/Job/JobDetails.js b/src/components/Job/JobDetails.js
index fb486a9581533e04c6e30da32b677492157953f0..bad9a60e408e12e7ee74e7082d2d5f41030a78c1 100644
--- a/src/components/Job/JobDetails.js
+++ b/src/components/Job/JobDetails.js
@@ -103,7 +103,8 @@ export const JobDetails = ({ operation, job }) => {
   );
 
   useEffect(() => {
-    setAlerts([createAlert(jobOperation, job), ...operation.alerts]);
+    const operationAlerts = operation.alerts ? operation.alerts : [];
+    setAlerts([createAlert(jobOperation, job), ...operationAlerts]);
   }, [operation, job, jobOperation]);
 
   return (