diff --git a/src/mailmanweb/static/mailmanweb/default/css/style.css b/src/mailmanweb/static/mailmanweb/default/css/style.css
index c57abbf..0162dd1 100755
--- a/src/mailmanweb/static/mailmanweb/default/css/style.css
+++ b/src/mailmanweb/static/mailmanweb/default/css/style.css
@@ -19,6 +19,7 @@
 .mm_header {
     padding: 5px;
     background-image: -webkit-linear-gradient(#FAFAFA, #EFEFEF);
+    background-image: -moz-linear-gradient(#FAFAFA, #EFEFEF);
     border-bottom: 1px solid #CACACA;
 }
 .mm_metaNav {