diff --git a/test/simulator-group/dmaapmed/docker-compose.yml b/test/simulator-group/dmaapmed/docker-compose.yml
index d0672df..e4c9a00 100644
--- a/test/simulator-group/dmaapmed/docker-compose.yml
+++ b/test/simulator-group/dmaapmed/docker-compose.yml
@@ -17,8 +17,8 @@
 version: '3.0'
 networks:
   default:
-    external:
-      name: ${DOCKER_SIM_NWNAME}
+    external: true
+    name: ${DOCKER_SIM_NWNAME}
 services:
   dmaap-mediator-service:
     image: ${DMAAP_MED_IMAGE}