diff --git a/front/lib/moment/moment.js b/front/lib/moment/moment.js
index 1b129716..b5c59233 100755
--- a/front/lib/moment/moment.js
+++ b/front/lib/moment/moment.js
@@ -2294,7 +2294,7 @@
 
     function preprocessRFC2822(s) {
         // Remove comments and folding whitespace and replace multiple-spaces with a single space
-        return s.replace(/\([^)]*\)|[\n\t]/g, ' ').replace(/(\s\s+)/g, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, '');
+        return s.replace(/\((?:(?!\().)*\)|[\n\t]/gs, ' ').replace(/(\s\s+)/g, ' ').replace(/^\s\s*/, '').replace(/\s\s*$/, '');
     }
 
     function checkWeekday(weekdayStr, parsedInput, config) {