diff --git a/qubesmanager/bootfromdevice.py b/qubesmanager/bootfromdevice.py
index b33e6d4..be1d4c0 100644
--- a/qubesmanager/bootfromdevice.py
+++ b/qubesmanager/bootfromdevice.py
@@ -114,8 +114,6 @@ class VMBootFromDeviceWindow(ui_bootfromdevice.Ui_BootDialog, QtGui.QDialog):
 parser = firewall.qubesadmin.tools.QubesArgumentParser(vmname_nargs=1)
 
 def main(args=None):
-    global bootfromdevice_window
-
     args = parser.parse_args(args)
     vm = args.domains.pop()
 
diff --git a/qubesmanager/global_settings.py b/qubesmanager/global_settings.py
index 2863f9f..96f0fab 100644
--- a/qubesmanager/global_settings.py
+++ b/qubesmanager/global_settings.py
@@ -314,8 +314,6 @@ def handle_exception(exc_type, exc_value, exc_traceback):
 
 
 def main():
-
-    global qtapp
     qtapp = QtGui.QApplication(sys.argv)
     qtapp.setOrganizationName("The Qubes Project")
     qtapp.setOrganizationDomain("http://qubes-os.org")
@@ -325,7 +323,6 @@ def main():
 
     app = Qubes()
 
-    global global_window
     global_window = GlobalSettingsWindow(qtapp, app)
 
     global_window.show()
diff --git a/qubesmanager/settings.py b/qubesmanager/settings.py
index cc53ebe..d3541bb 100755
--- a/qubesmanager/settings.py
+++ b/qubesmanager/settings.py
@@ -954,8 +954,6 @@ parser.set_defaults(
 )
 
 def main(args=None):
-    global settings_window
-
     args = parser.parse_args(args)
     vm = args.domains.pop()