diff --git a/lib/interface.py b/lib/interface.py
index ba6dd5c0..906676c5 100644
--- a/lib/interface.py
+++ b/lib/interface.py
@@ -67,6 +67,7 @@ class TcpConnection(threading.Thread, util.PrintError):
         self.host = str(self.host)
         self.port = int(self.port)
         self.use_ssl = (self.protocol == 's')
+        self.daemon = True
 
     def diagnostic_name(self):
         return self.host