diff --git a/dialogflow_task_executive/node_scripts/task_executive.py b/dialogflow_task_executive/node_scripts/task_executive.py
index 686327a55..8e278150a 100644
--- a/dialogflow_task_executive/node_scripts/task_executive.py
+++ b/dialogflow_task_executive/node_scripts/task_executive.py
@@ -82,8 +82,7 @@ def _list_apps_cb(self, msg):
 
     @property
     def running_apps(self):
-        return map(lambda a: a.name,
-                   self._latest_msg.running_apps)
+        return list(map(lambda a: a.name, self._latest_msg.running_apps))
 
     @property
     def available_apps(self):