diff --git a/docker-compose/generate-config.py b/docker-compose/generate-config.py
index 6fd8c045..579f1dc5 100755
--- a/docker-compose/generate-config.py
+++ b/docker-compose/generate-config.py
@@ -100,7 +100,7 @@
       net_front:
       net_back:
     ports:
-      - "100.64.101.1":{port}:{port}"
+      - "100.64.101.1:{port}:{port}"
     depends_on:
       - mariadb
       - crossbar