diff --git a/edit/themes/default/theme.css b/edit/themes/default/theme.css
index a148484..00f93b4 100644
--- a/edit/themes/default/theme.css
+++ b/edit/themes/default/theme.css
@@ -174,7 +174,7 @@ p.changesAborted { background: #C62828; color: #FFF; }
 #mainHeader #toggleNavigation { width: 3em; text-align: center; }
 #mainHeader #toggleNavigation:before { content:'\2630'; }
 
-#mainHeader #uploadFile:before { content: '📁'; }
+#mainHeader #uploadFile:before { content: '\01F4C1'; }
 #mainHeader #logoutLink:before { content: '\01F6B6'; }
 
 /************