diff --git a/script/RobotTCP.py b/script/RobotTCP.py
index 05810b5..6023ff1 100644
--- a/script/RobotTCP.py
+++ b/script/RobotTCP.py
@@ -19,7 +19,7 @@ class RobotTCP(TcpDevice, Stoppable):
          self.status = None
          self.lock = threading.Lock()
          self.joint_forces = None
-         self.running_task = False
+         self.running_task = None
          self.high_level_tasks = []
          
     def _sendReceive(self, msg_id, msg = "", timeout =  None):