diff --git a/server/model/monitor.js b/server/model/monitor.js
index 2520c282..b8df3830 100644
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -110,7 +110,7 @@ class Monitor extends BeanModel {
                     // Use Custom agent to disable session reuse
                     // https://github.com/nodejs/node/issues/3940
                     let res = await axios.get(this.url, {
-                        timeout: 15000,
+                        timeout: this.interval * 1000 * 0.8,
                         headers: {
                             "Accept": "*/*",
                             "User-Agent": "Uptime-Kuma",