diff --git a/mobile/skin/board/gallery/list.skin.php b/mobile/skin/board/gallery/list.skin.php
index 2131fc080..20f50eada 100644
--- a/mobile/skin/board/gallery/list.skin.php
+++ b/mobile/skin/board/gallery/list.skin.php
@@ -180,7 +180,7 @@ $(window).on("load", function() {
         <option value="wr_name,1"<?php echo get_selected($sfl, "wr_name,1"); ?>>글쓴이</option>
         <option value="wr_name,0"<?php echo get_selected($sfl, "wr_name,0"); ?>>글쓴이(코)</option>
     </select>
-    <input name="stx" value="<?php echo stripslashes($stx) ?>" placeholder="검색어(필수)" required id="stx" class="required" size="15" maxlength="20">
+    <input name="stx" value="<?php echo stripslashes($stx) ?>" placeholder="검색어(필수)" required id="stx" class="required frm_input" size="15" maxlength="20">
     <input type="submit" value="검색">
     </form>
 </fieldset>