1 files changed, 1 insertions, 0 deletions
diff --git a/KNOBS b/KNOBS
index 0f53dce22dec..75bd60f7f5e4 100644
--- a/KNOBS
+++ b/KNOBS
@@ -48,6 +48,7 @@ GHC			Prefer/use Glasgow Haskell Compiler
 GNOME			Adds GNOME support
 GNUTLS			Adds GnuTLS support
 GSASL			Adds GSASL support
+GSM			GSM audio codec support
 GSTREAMER		Gstreamer multimedia support
 GTK1			Adds Gtk+1 support
 GTK2			Adds Gtk+2 support