Index: dialin/ui/hd_simulator.py
===================================================================
diff -u -r3a5030c08d57bddc2c22dca05d1070375e3cb5f7 -r641f6cb4d7b26d132ab353b279a421f8603a354c
--- dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 3a5030c08d57bddc2c22dca05d1070375e3cb5f7)
+++ dialin/ui/hd_simulator.py	(.../hd_simulator.py)	(revision 641f6cb4d7b26d132ab353b279a421f8603a354c)
@@ -23,7 +23,7 @@
 from . import utils, messageBuilder
 from .hd_simulator_alarms import HDAlarmsSimulator
 from ..common.msg_defs import RequestRejectReasons, MsgIds, MsgFieldPositions
-from ..common.hd_defs import HDDefs
+from ..common.hd_defs import HDOpModes
 from ..protocols.CAN import (DenaliMessage,
                              DenaliCanMessenger,
                              DenaliChannels)
@@ -464,13 +464,13 @@
 
         if request == 0:
             self.logger.debug("Selecting treatment parameters")
-            self.cmd_send_hd_operation_mode(HDDefs.MODE_PRET.value)
+            self.cmd_send_hd_operation_mode(HDOpModes.MODE_PRET.value)
         elif request == 1:
             self.logger.debug("Canceling treatment")
-            self.cmd_send_hd_operation_mode(HDDefs.MODE_STAN.value)
+            self.cmd_send_hd_operation_mode(HDOpModes.MODE_STAN.value)
         elif request == 2:
             self.logger.debug("Starting treatment")
-            self.cmd_send_hd_operation_mode(HDDefs.MODE_TREA.value)
+            self.cmd_send_hd_operation_mode(HDOpModes.MODE_TREA.value)
 
         self.cmd_send_start_treatment_response(YES, 0)