diff --git a/allianceauth/project_template/project_name/settings/base.py b/allianceauth/project_template/project_name/settings/base.py
index 0291913b..14469132 100644
--- a/allianceauth/project_template/project_name/settings/base.py
+++ b/allianceauth/project_template/project_name/settings/base.py
@@ -39,6 +39,7 @@ INSTALLED_APPS = [
     'allianceauth.theme.darkly',
     'allianceauth.theme.flatly',
     'allianceauth.theme.materia',
+    "allianceauth.custom_css",
 ]
 
 SECRET_KEY = "wow I'm a really bad default secret key"