diff --git a/plugins/redmine_private_wiki/assets/stylesheets/private_wiki.css b/plugins/redmine_private_wiki/assets/stylesheets/private_wiki.css
index 19bd483..494438c 100755
--- a/plugins/redmine_private_wiki/assets/stylesheets/private_wiki.css
+++ b/plugins/redmine_private_wiki/assets/stylesheets/private_wiki.css
@@ -8,6 +8,8 @@
 }
 .private_wiki_flag {
     margin-left: .44em;
+    background: rgb(255, 50, 0, 0.5);
+    line-height: 1em;
 }
 
 .icon-setprivate{