diff --git a/Rs.SkyLine/Flow/WorkEnvironment.cs b/Rs.SkyLine/Flow/WorkEnvironment.cs
index 0dd71ea..694d4e2 100644
--- a/Rs.SkyLine/Flow/WorkEnvironment.cs
+++ b/Rs.SkyLine/Flow/WorkEnvironment.cs
@@ -38,6 +38,7 @@ namespace Rs.MotionPlat.Flow
         }
         public void Ready()
         {
+            EnvReadyOkEvent.Reset();
             Task.Run(() =>
             {
                 EnvironmentOk = false;