diff --git a/app/assets/stylesheets/fonts/openproject_icon_font.css.sass b/app/assets/stylesheets/fonts/openproject_icon_font.css.sass
index e62729387c..a81134387c 100644
--- a/app/assets/stylesheets/fonts/openproject_icon_font.css.sass
+++ b/app/assets/stylesheets/fonts/openproject_icon_font.css.sass
@@ -59,6 +59,11 @@
   content: attr(data-icon3)
   padding: 0px 8px 0px 0px
 
+[data-icon4]:before
+  @include data-icon
+  content: attr(data-icon4)
+  padding: 0px 8px 0px 3px
+
 #top-menu, #main-menu
   [class^="icon-"]:before,
   [class*=" icon-"]:before