diff --git a/src/ibmiotf/device.py b/src/ibmiotf/device.py
index 709b327f..f70bd168 100644
--- a/src/ibmiotf/device.py
+++ b/src/ibmiotf/device.py
@@ -189,7 +189,7 @@ def __subscribeToCommands(self):
 			self.logger.warning("Unable to subscribe to commands because device is not currently connected")
 			return False
 		else:
-			self.client.subscribe(COMMAND_TOPIC, qos=1)
+			self.client.subscribe(Client.COMMAND_TOPIC, qos=1)
 			return True
 
 	def __onCommand(self, client, userdata, pahoMessage):