diff --git a/docker-compose.yml b/docker-compose.yml
index 099f92283..731edd3a4 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -21,8 +21,8 @@ services:
             - PL_LEGACY_URL
             - PL_LEGACY_KEY
         ports:
-            - $PL_SERVER_PORT:3000
-            - $PL_BILLING_PORT:4000
+            - ${PL_SERVER_PORT:-3000}:3000
+            - ${PL_BILLING_PORT:-4000}:4000  
         volumes:
             - ./data:/data
             - ./docs:/docs
@@ -39,7 +39,7 @@ services:
             - PL_BILLING_ENABLED
             - PL_BILLING_STRIPE_PUBLIC_KEY
         ports:
-            - $PL_PWA_PORT:8080
+            - ${PL_PWA_PORT:-8080}:8080
         volumes:
             - ./pwa:/pwa
         command: ["build_and_start"]