diff --git a/web_ui/src/main.py b/web_ui/src/main.py
index 8f74c24..ea48325 100644
--- a/web_ui/src/main.py
+++ b/web_ui/src/main.py
@@ -11,7 +11,7 @@ from shared.utils import check_env, setup_logging
 from .app import init_app
 
 # ensure env vars set
-var_list = {
+NECESSARY_ENV_VAR_LIST = {
     'MONGO_HOST',
     'MONGO_DB',
     'MONGO_COLLECTION',
@@ -25,7 +25,7 @@ var_list = {
     'MINIO_BUCKET_NAME',
     'MINIO_BUCKET_NAME_MODELS',
 }
-check_env(var_list)
+check_env(NECESSARY_ENV_VAR_LIST)
 
 # setup logging stream handler
 setup_logging()