diff --git a/qubesmanager/bootfromdevice.py b/qubesmanager/bootfromdevice.py
index e408adf..bcf48ab 100644
--- a/qubesmanager/bootfromdevice.py
+++ b/qubesmanager/bootfromdevice.py
@@ -28,7 +28,7 @@ from qubesadmin import exc
 
 class VMBootFromDeviceWindow(ui_bootfromdevice.Ui_BootDialog,
                              QtWidgets.QDialog):
-    def __init__(self, vm, qapp, qubesapp=None, parent=None, new_vm = False):
+    def __init__(self, vm, qapp, qubesapp=None, parent=None, new_vm=False):
         super().__init__(parent)
 
         self.vm = vm