diff --git a/mandelstudio/settings/base.py b/mandelstudio/settings/base.py
index a1938c8..a2d6df2 100644
--- a/mandelstudio/settings/base.py
+++ b/mandelstudio/settings/base.py
@@ -72,9 +72,11 @@ def _ensure_installed_app(app_label: str, *, before: str | None = None) -> None:
         INSTALLED_APPS.append(app_label)
 
 
-# Prefer Carbasa's webshop templates whenever this project runs as a webshop.
-# Ensures the full Carbasa webshop header (search, user bar, cart, megamenu).
-if ocyan_config.is_webshop and importlib.util.find_spec("ocyan.plugin.carbasa.webshop"):
+# Prefer Carbasa's webshop templates whenever Oscar is enabled.
+# Ensures the full Carbasa webshop header (search, user bar, cart, megamenu),
+# even when the environment doesn't mark the site as a webshop explicitly.
+_oscar_enabled = any("ocyan.plugin.oscar" in app for app in INSTALLED_APPS)
+if _oscar_enabled and importlib.util.find_spec("ocyan.plugin.carbasa.webshop"):
     _ensure_installed_app("ocyan.plugin.carbasa.webshop", before="ocyan.plugin.carbasa")
 
 # Keep Carbasa/Coyote defaults stable even when plugin settings are not