diff --git a/src/main/webapp/WEB-INF/jsp/web/kakao/sent/KakaoSentDetailPopAjax.jsp b/src/main/webapp/WEB-INF/jsp/web/kakao/sent/KakaoSentDetailPopAjax.jsp
index 75f6376b..2a8cbad7 100644
--- a/src/main/webapp/WEB-INF/jsp/web/kakao/sent/KakaoSentDetailPopAjax.jsp
+++ b/src/main/webapp/WEB-INF/jsp/web/kakao/sent/KakaoSentDetailPopAjax.jsp
@@ -154,7 +154,7 @@
 <!-- 		<div class="tab_phone" id="tab_phone_2" style="display:none" > -->
 			<div class="phoneIn">
 				<div>
-					<div class="text_length2 clearfix">
+					<div class="rev_pop_middle clearfix">
 						<span>발송일시 : <fmt:formatDate value="${parsedDate}" pattern="yyyy-MM-dd HH:mm:ss"/></span>
 						<c:choose>
 							<c:when test="${not empty fileInfos}">