diff --git a/client/pages/filespage/share.js b/client/pages/filespage/share.js
index 8873e362..8ea9b77f 100644
--- a/client/pages/filespage/share.js
+++ b/client/pages/filespage/share.js
@@ -182,9 +182,15 @@ export class ShareComponent extends React.Component {
         };
         const datify = function(str){
             if(!str) return str;
-            const d = new Date(str);
-            const pad = (a) => a.toString().length === 1 ? "0"+a : a;
-            return [d.getFullYear(), pad(d.getMonth()), pad(d.getDate())].join("-");
+            const d = new Date(str); 
+
+            // old browser not implementing input[type=date] elements
+            // may return invalid date,
+            if(isNaN(d.getDate())) return str;
+            
+            const pad2 = (a) => ("00"+a).slice(-2);
+            const pad4 = (a) => ("0000"+a).slice(-4);
+            return [pad4(d.getFullYear()), pad2(d.getMonth()+1), pad2(d.getDate())].join("-");
         };
 
         return (