diff --git a/doomcc/doom_base.py b/doomcc/doom_base.py
index c12a867..9491946 100644
--- a/doomcc/doom_base.py
+++ b/doomcc/doom_base.py
@@ -62,11 +62,9 @@ class Wad(doomcc.config.Base):
         return self._config.get("options", {})
 
     def options(self):
-        options = []
-        for k, v in self.options_dict().items():
-            list.append(options, f"{k}={v}")
-        if len(options) > 0:
-            return ["-assign", ",".join(options)]
+        options_dict = self.options_dict()
+        if len(options_dict) > 0:
+            return ["-assign"] + [f"{k}={v}" for k, v in options_dict.items()]
         return []
 
     def thumb_overlay_path(self):