diff --git a/docker-compose.yml b/docker-compose.yml
index f0c274c..aa78dae 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,7 +7,7 @@ services:
     environment:
       # PostgreSQL Connection
       POSTGRES_HOST: ${POSTGRES_HOST}
-      POSTGRES_PORT: ${POSTGRES_PORT:}
+      POSTGRES_PORT: ${POSTGRES_PORT}
       POSTGRES_DB: ${POSTGRES_DB}
       POSTGRES_USER: ${POSTGRES_USER}
       POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}