diff --git a/src/pages/p2pinfo.jsx b/src/pages/p2pinfo.jsx
index 6df4c1f..193b36a 100644
--- a/src/pages/p2pinfo.jsx
+++ b/src/pages/p2pinfo.jsx
@@ -73,6 +73,13 @@ const infos = [
   },
 ]
 
+function getDateString(dateNumber) {
+  if (Number.isNaN(+dateNumber)) {
+    return ' - '
+  }
+  return new Date(dateNumber).toLocaleString()
+}
+
 export default function P2PInfo({ globalState, setGlobalState }) {
   const [p2pInfo, setP2pinfo] = useState()
   const info = p2pInfo
@@ -136,7 +143,7 @@ export default function P2PInfo({ globalState, setGlobalState }) {
           let text = info[key]
           switch (type) {
             case 'date':
-              text = new Date(text).toLocaleString()
+              text = getDateString(text)
               break
             case 'number':
               text = text.toLocaleString()
@@ -169,7 +176,7 @@ export default function P2PInfo({ globalState, setGlobalState }) {
                   {peer.host}:{peer.port}
                 </a>
               </div>
-              <div>{new Date(peer.lastSync).toLocaleString()}</div>
+              <div>{getDateString(peer.lastSync)}</div>
             </div>
           )
         })}