diff --git a/app/less/mobile.less b/app/less/mobile.less
index a5cb2a79..ad6f6d23 100644
--- a/app/less/mobile.less
+++ b/app/less/mobile.less
@@ -1120,6 +1120,9 @@ a.im_dialog {
     margin-right: 3px;
   }
 }
+.im_dialog_message_wrap {
+  height: 51px;
+}
 
 .im_dialog_unread {
   &,