diff --git a/app/utils/misc.py b/app/utils/misc.py
index 7702a1b..9a1b471 100644
--- a/app/utils/misc.py
+++ b/app/utils/misc.py
@@ -16,7 +16,8 @@ def gen_file_hash(path: str, static_file: str) -> str:
 
 def read_config_bool(var: str) -> bool:
     val = os.getenv(var, '0')
-    # user can specify one of the following values as 'true' inputs:
+    # user can specify one of the following values as 'true' inputs (all
+    # variants with upper case letters will also work):
     # ('true', 't', '1', 'yes', 'y')
     val = val.lower() in ('true', 't', '1', 'yes', 'y')
     return val