diff --git a/src/utilities/AlarmHelper.cpp b/src/utilities/AlarmHelper.cpp
index 750f973..51a4ad7 100644
--- a/src/utilities/AlarmHelper.cpp
+++ b/src/utilities/AlarmHelper.cpp
@@ -28,24 +28,15 @@ QString AlarmHelper::getAlarmString(int aCode)
     case DMSL_F414:
     case DMSL_F415:
     case DMSL_F416:
-    case DMSL_F417:
-    case DMSL_F418:
     case DMSL_F419:
-    case DMSL_F420:
     case DMSL_F421:
     case DMSL_F422:
     case DMSL_F423:
-    case DMSL_F491:
-    case DMSL_F493:
-    case DMSL_F496:
-    case DMSL_F497:
-    case DMSL_F498:
-    case DMSL_F499:
         return QObject::tr("\nHardware error, please contact maintenance staff.");
-    case DMSL_F495:
+    case DMSL_F420:
         return QObject::tr("\nDevice busy, please try again later.");
-    case DMSL_F492:
-    case DMSL_F494:
+    case DMSL_F417:
+    case DMSL_F418:
         return QObject::tr("\nThe emergency button has been pushed. Please reset it before other operations.");
     default:
         return "";