diff --git a/package/x11/mozilla/mozilla.desc b/package/x11/mozilla/mozilla.desc
index f9251a69b..6b832fa9e 100644
--- a/package/x11/mozilla/mozilla.desc
+++ b/package/x11/mozilla/mozilla.desc
@@ -41,6 +41,7 @@
 [M] Rene Rebe <rene@exactcode.de>
 
 [C] extra/office
+[F] CORE
 
 [L] MPL
 [S] Stable