diff --git a/qutebrowser/browser/commands.py b/qutebrowser/browser/commands.py
index 6e103d51f..956925d71 100644
--- a/qutebrowser/browser/commands.py
+++ b/qutebrowser/browser/commands.py
@@ -853,7 +853,7 @@ class CommandDispatcher:
 
     @cmdutils.register(instance='command-dispatcher', scope='window')
     @cmdutils.argument('count', count=True)
-    def zoom(self, zoom: int=None, count=None):
+    def zoom(self, zoom: int = None, count=None):
         """Set the zoom level for the current tab.
 
         The zoom can be given as argument or as [count]. If neither is