diff --git a/js/twister_formatpost.js b/js/twister_formatpost.js
index f5c25cd..5e271c9 100644
--- a/js/twister_formatpost.js
+++ b/js/twister_formatpost.js
@@ -322,7 +322,7 @@ function _extractHashtag(s) {
     var hashtag = "";
     s = reverseHtmlEntities(s);
     for( var i = 0; i < s.length; i++ ) {
-        if( " \n\t.,:/?!;'\"()[]{}*".indexOf(s[i]) < 0 ) {
+        if( " \n\t.,:/?!;'\"()[]{}*#".indexOf(s[i]) < 0 ) {
             hashtag += s[i];
         } else {
             break;