diff --git a/script/RobotTCP.py b/script/RobotTCP.py
index 75ef08f..27b34f6 100644
--- a/script/RobotTCP.py
+++ b/script/RobotTCP.py
@@ -389,7 +389,7 @@ class RobotTCP(TcpDevice, Stoppable):
         tasks = [t for t in self.high_level_tasks]
         if not program in tasks: 
             tasks.append(pro)
-        for task in task:
+        for task in tasks:
             if self.get_task_status(task)[0]>=0:
                 raise Exception("Ongoing high-level task: " + task)
         print "Setting ", program
@@ -400,7 +400,7 @@ class RobotTCP(TcpDevice, Stoppable):
         tasks = [t for t in self.high_level_tasks]
         if (self.current_task is not None) and (not self.current_task in tasks): 
             tasks.append(pro)
-        for task in task:
+        for task in tasks:
             if self.get_task_status(task)[0]>=0:
                 self.task_kill(task)