diff --git a/qubesmanager/backup.py b/qubesmanager/backup.py
index 455500e8..c250bae2 100644
--- a/qubesmanager/backup.py
+++ b/qubesmanager/backup.py
@@ -410,7 +410,7 @@ def backup_location_changed(self, new_dir=None):
 # Copyright (c) 2002-2007 Pascal Varet <p.varet@gmail.com>
 
 def handle_exception(exc_type, exc_value, exc_traceback):
-    filename, line, dummy, dummy = traceback.extract_tb(exc_traceback).pop()
+    filename, line, _, _ = traceback.extract_tb(exc_traceback).pop()
     filename = os.path.basename(filename)
     error = "%s: %s" % (exc_type.__name__, exc_value)
 
diff --git a/qubesmanager/global_settings.py b/qubesmanager/global_settings.py
index fdcee8a0..9e1f356e 100644
--- a/qubesmanager/global_settings.py
+++ b/qubesmanager/global_settings.py
@@ -303,7 +303,7 @@ def save_and_apply(self):
 # Copyright (c) 2002-2007 Pascal Varet <p.varet@gmail.com>
 
 def handle_exception(exc_type, exc_value, exc_traceback):
-    filename, line, dummy, dummy = traceback.extract_tb(exc_traceback).pop()
+    filename, line, _, _ = traceback.extract_tb(exc_traceback).pop()
     filename = os.path.basename(filename)
     error = "%s: %s" % (exc_type.__name__, exc_value)
 
diff --git a/qubesmanager/qube_manager.py b/qubesmanager/qube_manager.py
index f20410fa..e19f0317 100644
--- a/qubesmanager/qube_manager.py
+++ b/qubesmanager/qube_manager.py
@@ -1297,7 +1297,7 @@ def show_log(self, action):
 
 def handle_exception(exc_type, exc_value, exc_traceback):
 
-    filename, line, dummy, dummy = traceback.extract_tb(exc_traceback).pop()
+    filename, line, _, _ = traceback.extract_tb(exc_traceback).pop()
     filename = os.path.basename(filename)
     error = "%s: %s" % (exc_type.__name__, exc_value)
 
diff --git a/qubesmanager/restore.py b/qubesmanager/restore.py
index d8a4a276..4100b9b7 100644
--- a/qubesmanager/restore.py
+++ b/qubesmanager/restore.py
@@ -304,7 +304,7 @@ def backup_location_changed(self, new_dir=None):
 
 def handle_exception(exc_type, exc_value, exc_traceback):
 
-    filename, line, dummy, dummy = traceback.extract_tb(exc_traceback).pop()
+    filename, line, _, _ = traceback.extract_tb(exc_traceback).pop()
     filename = os.path.basename(filename)
     error = "%s: %s" % (exc_type.__name__, exc_value)
 
diff --git a/qubesmanager/template_manager.py b/qubesmanager/template_manager.py
index 88e1a082..1276f943 100644
--- a/qubesmanager/template_manager.py
+++ b/qubesmanager/template_manager.py
@@ -394,7 +394,7 @@ def vm_state_change(self, is_running, row=None):
 
 def handle_exception(exc_type, exc_value, exc_traceback):
 
-    filename, line, dummy, dummy = traceback.extract_tb(exc_traceback).pop()
+    filename, line, _, _ = traceback.extract_tb(exc_traceback).pop()
     filename = os.path.basename(filename)
     error = "%s: %s" % (exc_type.__name__, exc_value)