diff --git a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml
index f3c18198a..cbf0d0b26 100644
--- a/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml
+++ b/seichi-onp-k8s/manifests/seichi-kubernetes/apps/cluster-wide-apps/app-of-other-apps/prometheus-operator.yaml
@@ -93,7 +93,7 @@ spec:
           envValueFrom:
             MARIADB_MONITORING_PASSWORD:
               secretKeyRef:
-                name: mariadb-monitoring
+                name: mariadb-monitoring-password
                 key: monitoring-password
           envFromSecret: "grafana-github-oauth-app-secret"
           persistence: