diff --git a/compose.yml b/compose.yml
index deca3e5..35a30bb 100644
--- a/compose.yml
+++ b/compose.yml
@@ -62,7 +62,7 @@ services:
     volumes:
       - ./files/icinga2:/data
     ports:
-      - ${ICINGA_API_PORT:5665}:5665  # only need if you plan to use api from other sources as icingaweb2
+      - ${ICINGA_API_PORT:-5665}:5665  # only need if you plan to use api from other sources as icingaweb2
     networks:
       - icinga
       #- backend