diff --git a/sf_machine_connect/controllers/controllers.py b/sf_machine_connect/controllers/controllers.py
index f14d3790..df0890da 100644
--- a/sf_machine_connect/controllers/controllers.py
+++ b/sf_machine_connect/controllers/controllers.py
@@ -905,8 +905,8 @@ class Sf_Dashboard_Connect(http.Controller):
                 res['data'].append({
                     'name': log.name,
                     'alarm_time': log.alarm_time.strftime('%Y-%m-%d %H:%M:%S'),
-                    'fault_alarm_info': log.fault_alarm_info,
-                    'fault_process': log.fault_process
+                    'fault_alarm_info': log.fault_alarm_info if log.fault_alarm_info else ' ',
+                    'fault_process': log.fault_process if log.fault_process else ' ',
                 })
 
         except Exception as e: