diff --git a/media-libs/libggi/metadata.xml b/media-libs/libggi/metadata.xml
index efd310f1c6024..8261e5522d5c5 100644
--- a/media-libs/libggi/metadata.xml
+++ b/media-libs/libggi/metadata.xml
@@ -5,6 +5,8 @@
     <email>media-video@gentoo.org</email>
   </maintainer>
   <use>
+    <flag name="3dfx">Enables support for Voodoo chipsets, also called
+      3DFX and TDFX</flag>
     <flag name="vis">Enables sparc vis support for libggi</flag>
   </use>
   <upstream>