diff --git a/plugins/RemovableDriveOutputDevice/RemovableDrivePlugin.py b/plugins/RemovableDriveOutputDevice/RemovableDrivePlugin.py
index d60e4b34f0..873076ea71 100644
--- a/plugins/RemovableDriveOutputDevice/RemovableDrivePlugin.py
+++ b/plugins/RemovableDriveOutputDevice/RemovableDrivePlugin.py
@@ -21,7 +21,7 @@ class RemovableDrivePlugin(OutputDevicePlugin):
         super().__init__()
 
         self._update_thread = threading.Thread(target = self._updateThread)
-        self._update_thread.setDaemon(True)
+        self._update_thread.deamon = True
 
         self._check_updates = True
 
diff --git a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
index 5d68d9f544..02e3cc137d 100644
--- a/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
+++ b/plugins/USBPrinting/USBPrinterOutputDeviceManager.py
@@ -40,7 +40,7 @@ class USBPrinterOutputDeviceManager(QObject, OutputDevicePlugin):
         self._usb_output_devices = {}
         self._usb_output_devices_model = None
         self._update_thread = threading.Thread(target = self._updateThread)
-        self._update_thread.setDaemon(True)
+        self._update_thread.daemon = True
 
         self._check_updates = True