diff --git a/tests/docker-compose-ci.yml b/tests/docker-compose-ci.yml
index 6221947..8fcb6ae 100644
--- a/tests/docker-compose-ci.yml
+++ b/tests/docker-compose-ci.yml
@@ -39,6 +39,7 @@ services:
     environment:
       - SPLUNK_HEC_URL=https://splunk:8088
       - SPLUNK_HEC_TOKEN=70b6ae71-76b3-4c38-9597-0c5b37ad9630
+      - SC4S_DEST_SPLUNK_SC4S_METRICS_HEC=yes
       - SC4S_SOURCE_TLS_ENABLE=no
       - SC4S_DEST_SPLUNK_HEC_TLS_VERIFY=no
       - SC4S_LISTEN_JUNIPER_NETSCREEN_TCP_PORT=5000