diff --git a/prometheus/haproxy-2.0-full.json b/prometheus/haproxy-2.0-full.json
index 9af3429..6b0eeb1 100644
--- a/prometheus/haproxy-2.0-full.json
+++ b/prometheus/haproxy-2.0-full.json
@@ -106,7 +106,7 @@
           },
           "targets": [
             {
-              "expr": "time() - haproxy_process_start_time_seconds",
+              "expr": "time() - haproxy_process_start_time_seconds{instance=~\"$host:$port\"}",
               "intervalFactor": 2,
               "refId": "A",
               "step": 1800
@@ -8848,4 +8848,4 @@
   "timezone": "browser",
   "title": "HAProxy 2.0",
   "version": 135
-}
\ No newline at end of file
+}