diff --git a/rwx/grub/__init__.py b/rwx/grub/__init__.py
index 2b44e57..cd016ab 100644
--- a/rwx/grub/__init__.py
+++ b/rwx/grub/__init__.py
@@ -34,6 +34,6 @@ def make_image(
     if pubkey_path:
         args.append(("--pubkey", pubkey_path))
     args.extend(modules)
-    if modules := MODULES.get(image_format, None):
+    if modules := MODULES.get(image_format):
         args.extend(modules)
     ps.run(*args)