diff --git a/services/core/compose/docker-compose.yml b/services/core/compose/docker-compose.yml
index 774324a6..1e087ab6 100644
--- a/services/core/compose/docker-compose.yml
+++ b/services/core/compose/docker-compose.yml
@@ -39,6 +39,8 @@ services:
       - ../data/client-plugins:/mattermost/client/plugins
       - ../data/bleve-indexes:/mattermost/bleve-indexes
     environment:
+      - MM_SQLSETTINGS_DRIVERNAME=postgres
+      - MM_SQLSETTINGS_DATASOURCE=postgres://mmuser:${NEXO_DB_PASSWORD:-mmuser_password}@db:5432/mattermost?sslmode=disable&connect_timeout=10
       - MM_DBSETTINGS_DRIVERNAME=postgres
       - MM_DBSETTINGS_DATASOURCE=postgres://mmuser:${NEXO_DB_PASSWORD:-mmuser_password}@db:5432/mattermost?sslmode=disable&connect_timeout=10
       - MM_SERVICESETTINGS_SITEURL=${NEXO_SITE_URL:-http://localhost:18065}