diff --git a/docs/en/setup/backend/grafana.json b/docs/en/setup/backend/grafana.json
index 79af54955c23175d7b69f674c176ecd4432f5e89..7fe52732f384506a8846facb3f3c219317e7efcb 100644
--- a/docs/en/setup/backend/grafana.json
+++ b/docs/en/setup/backend/grafana.json
@@ -381,7 +381,7 @@
           "format": "time_series",
           "hide": false,
           "intervalFactor": 1,
-          "legendFormat": "{{sw_backend_instance}}",
+          "legendFormat": "{{sw_backend_instance}}-{{protocol}}",
           "refId": "A"
         }
       ],
@@ -532,7 +532,7 @@
           "expr": "rate(trace_analysis_error_count[1m]) ",
           "format": "time_series",
           "intervalFactor": 1,
-          "legendFormat": "{{sw_backend_instance}}",
+          "legendFormat": "{{sw_backend_instance}}-{{protocol}}",
           "refId": "A"
         }
       ],
@@ -618,7 +618,7 @@
           "format": "time_series",
           "hide": false,
           "intervalFactor": 1,
-          "legendFormat": "{{sw_backend_instance}}",
+          "legendFormat": "{{sw_backend_instance}}-{{protocol}}",
           "refId": "A"
         }
       ],
@@ -1115,4 +1115,4 @@
   "title": "SkyWalking telemetry dashboard",
   "uid": "7NEmel8mk",
   "version": 19
-}
\ No newline at end of file
+}