diff --git a/lib/common.lib.php b/lib/common.lib.php
index 8f70a6a34..624017d40 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -2320,10 +2320,11 @@ function https_url($dir, $https=true)
 // 게시판의 공지사항을 , 로 구분하여 업데이트 한다.
 function board_notice($bo_notice, $wr_id, $insert=false)
 {
-    if(strpos($bo_notice, strval($wr_id)) !== false)
+    $notice_array = explode(",", trim($bo_notice));
+
+    if($insert && in_array($wr_id, $notice_array))
         return $bo_notice;
 
-    $notice_array = explode(",", trim($bo_notice));
     $notice_array = array_merge(array($wr_id), $notice_array);
     $notice_array = array_unique($notice_array);
     foreach ($notice_array as $key=>$value) {