diff --git a/config.lib b/config.lib
index 9bbd86093d..fd59496527 100644
--- a/config.lib
+++ b/config.lib
@@ -3169,6 +3169,7 @@ showhelp() {
 	echo "  --with-midi=midi               define which midi-player to use"
 	echo "  --with-midi-arg=arg            define which args to use for the"
 	echo "                                 midi-player"
+	echo "  --with-libtimidity             enables libtimidity support"
 	echo "  --with-allegrol[=allegro-config]"
 	echo "                                 enables Allegro video driver support"
 	echo "  --with-cocoa                   enables COCOA video driver (OSX ONLY)"