diff --git a/cura/PrinterOutputDevice.py b/cura/PrinterOutputDevice.py
index d9c3a0d9f7..6ab80f877e 100644
--- a/cura/PrinterOutputDevice.py
+++ b/cura/PrinterOutputDevice.py
@@ -152,11 +152,11 @@ class PrinterOutputDevice(OutputDevice, QObject):
 
     ##  Attempt to establish connection
     def connect(self):
-        pass
+        raise NotImplementedError("connect needs to be implemented")
 
     ##  Attempt to close the connection
     def close(self):
-        pass
+        raise NotImplementedError("close needs to be implemented")
 
     @pyqtProperty(bool, notify = connectionStateChanged)
     def connectionState(self):