diff --git a/lib/common.lib.php b/lib/common.lib.php
index ad6ceda74..60000bbea 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -3077,7 +3077,9 @@ function get_search_string($stx)
 function clean_xss_tags($str, $check_entities=0, $is_remove_tags=0, $cur_str_len=0)
 {
     // space, tab('\t'), formfeed('\f'), vertical tab('\v'), newline('\n'), carriage return('\r') 를 제거한다.
-    $str = preg_replace('#[[:space:]]#', '', $str);
+    // $str = preg_replace('#[[:space:]]#', '', $str);
+    // tab('\t'), formfeed('\f'), vertical tab('\v'), newline('\n'), carriage return('\r') 를 제거한다.
+    $str = preg_replace('#[\t\f\v\n\r]#', '', $str);
 
     if( $is_remove_tags ){
         $str = strip_tags($str);