diff --git a/base-services.yml b/base-services.yml
--- a/base-services.yml
+++ b/base-services.yml
@@ -105,6 +105,7 @@
       PGHOST: db-storage
       PGUSER: swh
       POSTGRES_DB: swh-storage
+      FLAVOR: mirror
       PORT: "5002"
       STATSD_HOST: prometheus-statsd-exporter
       STATSD_PORT: 9125
diff --git a/graph-replayer-override.yml b/graph-replayer-override.yml
--- a/graph-replayer-override.yml
+++ b/graph-replayer-override.yml
@@ -2,9 +2,6 @@
 version: '3.7'
 
 services:
-  storage:
-    environment:
-      FLAVOR: mirror
   graph-replayer:
     image: softwareheritage/replayer:${SWH_IMAGE_TAG:-latest}
     environment: