diff --git a/docker-compose.dev.yml b/docker-compose.dev.yml
index d84e00d2..8b7c65de 100644
--- a/docker-compose.dev.yml
+++ b/docker-compose.dev.yml
@@ -6,7 +6,7 @@ services:
       dockerfile: Dockerfile
     environment:
       FLASK_PORT: 8084
-      DEBUG: true
+      LOG_LEVEL: debug
       BOOK_LANGUAGE: en
       USE_BOOK_TITLE: true
       CUSTOM_DNS: cloudflare
diff --git a/env.py b/env.py
index af4af9ac..545bebe7 100644
--- a/env.py
+++ b/env.py
@@ -23,7 +23,7 @@ _CUSTOM_SCRIPT = os.getenv("CUSTOM_SCRIPT", "").strip()
 FLASK_HOST = os.getenv("FLASK_HOST", "0.0.0.0")
 FLASK_PORT = int(os.getenv("FLASK_PORT", "8084"))
 FLASK_DEBUG = string_to_bool(os.getenv("FLASK_DEBUG", "False"))
-LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO")
+LOG_LEVEL = os.getenv("LOG_LEVEL", "INFO").upper()
 ENABLE_LOGGING = string_to_bool(os.getenv("ENABLE_LOGGING", "true"))
 MAIN_LOOP_SLEEP_TIME = int(os.getenv("MAIN_LOOP_SLEEP_TIME", "5"))
 DOCKERMODE = string_to_bool(os.getenv("DOCKERMODE", "false"))