diff --git a/deployments/monitor/grafana/milvus-dashboard.json b/deployments/monitor/grafana/milvus-dashboard.json
index 3883c70cdb..662786f202 100644
--- a/deployments/monitor/grafana/milvus-dashboard.json
+++ b/deployments/monitor/grafana/milvus-dashboard.json
@@ -436,7 +436,7 @@
           "label": null,
           "logBase": 1,
           "max": null,
-          "min": null,
+          "min": "0",
           "show": true
         }
       ],