diff --git a/prometheus/node-exporter-full.json b/prometheus/node-exporter-full.json
index c5e592e..8b9b501 100644
--- a/prometheus/node-exporter-full.json
+++ b/prometheus/node-exporter-full.json
@@ -69,7 +69,7 @@
           "uid": "${DS_PROMETHEUS}"
         },
         "enable": true,
-        "expr": "changes(node_boot_time_seconds{instance=\"$node\"})",
+        "expr": "changes(node_boot_time_seconds{instance=\"$node\"}[$__rate_interval])",
         "iconColor": "red",
         "name": "Reboot"
       }
@@ -23197,4 +23197,4 @@
   "uid": "rYdddlPWk",
   "version": 9,
   "weekStart": ""
-}
\ No newline at end of file
+}