diff --git a/packages/backend-core/src/environment.ts b/packages/backend-core/src/environment.ts
index d742ca1cc9..9a07695734 100644
--- a/packages/backend-core/src/environment.ts
+++ b/packages/backend-core/src/environment.ts
@@ -82,6 +82,7 @@ const environment = {
   SESSION_UPDATE_PERIOD: process.env.SESSION_UPDATE_PERIOD,
   DEPLOYMENT_ENVIRONMENT:
     process.env.DEPLOYMENT_ENVIRONMENT || "docker-compose",
+  LOG_4XX: process.env.LOG_4XX,
   _set(key: any, value: any) {
     process.env[key] = value
     // @ts-ignore