diff --git a/bbs/ajax.filter.php b/bbs/ajax.filter.php
index 05d7bc4c6..c696a0628 100644
--- a/bbs/ajax.filter.php
+++ b/bbs/ajax.filter.php
@@ -11,7 +11,7 @@ for ($i=0; $i<count($filter); $i++) {
     $str = $filter[$i];
 
     // 제목 필터링 (찾으면 중지)
-    $subj = "";
+    $subj = $cont = "";
     $pos = stripos($subject, $str);
     if ($pos !== false) {
         $subj = $str;
@@ -19,7 +19,6 @@ for ($i=0; $i<count($filter); $i++) {
     }
 
     // 내용 필터링 (찾으면 중지)
-    $cont = "";
     $pos = stripos($content, $str);
     if ($pos !== false) {
         $cont = $str;