diff --git a/.env.example b/.env.example
index c87652f32771..21a60e60d1f3 100644
--- a/.env.example
+++ b/.env.example
@@ -46,7 +46,7 @@ FE_PORT=4200
 
 # Use this variables to configure hostnames for frontend and backend, e.g. to enable HTTPS in docker development setup
 OPENPROJECT_DEV_HOST=localhost
-OPENPROJECT_DEV_URL=http://${OPENPROJECT_DEV_HOST}:${PORT}
+OPENPROJECT_DEV_URL=http://${OPENPROJECT_DEV_HOST}:${FE_PORT}
 
 # Select edition from: ['standard','bim']
 OPENPROJECT_EDITION=standard