diff --git a/server/model/monitor.js b/server/model/monitor.js
index ae409616..f523dd4d 100644
--- a/server/model/monitor.js
+++ b/server/model/monitor.js
@@ -81,7 +81,7 @@ class Monitor extends BeanModel {
                     bean.ping = dayjs().valueOf() - startTime;
 
                     // Check certificate if https is used
-                    if (this.getUrl().protocol === "https:") {
+                    if (this.getUrl()?.protocol === "https:") {
                         await this.updateTlsInfo(checkCertificate(res));
                     }
 
diff --git a/src/pages/Details.vue b/src/pages/Details.vue
index a2952aa0..6d93df39 100644
--- a/src/pages/Details.vue
+++ b/src/pages/Details.vue
@@ -54,7 +54,7 @@
         </div>
     </div>
 
-    <div class="shadow-box big-padding text-center stats" v-if="monitor.type === 'http' && monitor.getUrl().protocol === 'https:' && certInfo != null">
+    <div class="shadow-box big-padding text-center stats" v-if="monitor.type === 'http' && monitor.getUrl()?.protocol === 'https:' && certInfo != null">
         <div class="row">
             <div class="col">
                 <h4>Certificate Info</h4>