diff --git a/__init__.py b/__init__.py
index 4c21079..a53c2e4 100644
--- a/__init__.py
+++ b/__init__.py
@@ -247,7 +247,7 @@ class FlightGearCopilotSkill(MycroftSkill):
 		return tn
 
 	# exit routine to properly close the tn con
-	def exit(tn):
+	def exit(self, tn):
 		tn.close
 		sys.exit(0)