diff --git a/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py b/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py
index fe48c2ca5a75e2d8dda6c548344360b4e2331cac..26d42fd17f3090417360a4dcf45d475d06586a2a 100644
--- a/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py
+++ b/SAS/TMSS/src/tmss/tmssapp/models/scheduling.py
@@ -185,6 +185,8 @@ class Subtask(BasicCommon):
             except Exception as e:
                 logger.error("Could not send state change to messagebus: %s", e)
 
+            # update the previous state value
+            self.__original_state = self.state
 
 class SubtaskStateLog(BasicCommon):
     """