diff --git a/core/apps.py b/core/apps.py
index 8f891fc..62fcf42 100644
--- a/core/apps.py
+++ b/core/apps.py
@@ -23,7 +23,7 @@
     "longstrfdate": "%a %d %B %Y",
     "iso_raw_date": "False",
     "age_of_majority": "18",
-    "async_mutations": "True" if os.environ.get("ASYNC", os.environ.get("MODE", "PROD")) == "PROD" else "False",
+    "async_mutations": "True" if settings.ASYNC else "False",
     "password_reset_template": "password_reset.txt",
     "currency": "$",
     "gql_query_users_perms": ["121701"],