diff --git a/cura/CuraApplication.py b/cura/CuraApplication.py
index 49f1bac716..e5eee35746 100644
--- a/cura/CuraApplication.py
+++ b/cura/CuraApplication.py
@@ -439,7 +439,6 @@ class CuraApplication(QtApplication):
             self.__single_instance_server = QLocalServer()
             self.__single_instance_server.newConnection.connect(self._singleInstanceServerNewConnection)
             self.__single_instance_server.listen("ultimaker-cura")
-            Logger.log("d","Single-instance: Listening on: " + repr(self.__single_instance_server.fullServerName()))
 
     def _singleInstanceServerNewConnection(self):
         Logger.log("i", "New connection recevied on our single-instance server")
@@ -447,11 +446,9 @@ class CuraApplication(QtApplication):
 
         if remote_cura_connection is not None:
             def readCommands():
-                Logger.log("d", "Single-instance: readCommands()")
                 line = remote_cura_connection.readLine()
                 while len(line) != 0:    # There is also a .canReadLine()
                     try:
-                        Logger.log("d", "Single-instance: Read command line: " + repr(line))
                         payload = json.loads(str(line, encoding="ASCII").strip())
                         command = payload["command"]
 
@@ -482,11 +479,6 @@ class CuraApplication(QtApplication):
                     line = remote_cura_connection.readLine()
 
             remote_cura_connection.readyRead.connect(readCommands)
-            def disconnected():
-                Logger.log("d", "Single-instance: Disconnected")
-                readCommands()
-                Logger.log("d", "Single-instance: Finished disconnected")
-            remote_cura_connection.disconnected.connect(disconnected)    # Get any last commands before it is destroyed.
 
     ##  Perform any checks before creating the main application.
     #
diff --git a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
index 666ec4c856..67e21e1abe 100644
--- a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
+++ b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2015 Ultimaker B.V.
+# Copyright (c) 2017 Ultimaker B.V.
 # Cura is released under the terms of the AGPLv3 or higher.
 
 from UM.Signal import Signal, signalemitter
@@ -270,7 +270,7 @@ class USBPrinterOutputDeviceManager(QObject, OutputDevicePlugin, Extension):
                 base_list = base_list + glob.glob("/dev/ttyUSB*") + glob.glob("/dev/ttyACM*") + glob.glob("/dev/cu.usb*") + glob.glob("/dev/tty.wchusb*") + glob.glob("/dev/cu.wchusb*")
                 base_list = filter(lambda s: "Bluetooth" not in s, base_list) # Filter because mac sometimes puts them in the list
             else:
-                base_list = base_list + glob.glob("/dev/ttyUSB*") + glob.glob("/dev/ttyACM*") + glob.glob("/dev/cu.*") + glob.glob("/dev/tty.usb*") + glob.glob("/dev/rfcomm*") + glob.glob("/dev/serial/by-id/*")
+                base_list = base_list + glob.glob("/dev/ttyUSB*") + glob.glob("/dev/ttyACM*") + glob.glob("/dev/cu.*") + glob.glob("/dev/tty.usb*") + glob.glob("/dev/tty.wchusb*") + glob.glob("/dev/cu.wchusb*") + glob.glob("/dev/rfcomm*") + glob.glob("/dev/serial/by-id/*")
         return list(base_list)
 
     _instance = None