diff --git a/www-client/firefox/metadata.xml b/www-client/firefox/metadata.xml
index dde9d8252322e..fbdfd67c50ef4 100644
--- a/www-client/firefox/metadata.xml
+++ b/www-client/firefox/metadata.xml
@@ -15,6 +15,7 @@
 		downloaded and kept up-to-date in user profiles</flag>
 	<flag name="gstreamer-0">Use gstreamer:0.10 instead of gstreamer:1 for media support</flag>
 	<flag name="hwaccel">Use hardware-accelerated rendering</flag>
+	<flag name="jemalloc">Enable or disable jemalloc</flag>
 	<flag name="jemalloc3">Enable or disable jemalloc3 (forced-on when supported prior to 38.0)</flag>
 	<flag name="minimal">Prevent sdk and headers from being installed</flag>
 	<flag name="pgo">Add support for profile-guided optimization using gcc-4.5,