diff --git a/share/doc/usd/31.trek/Makefile b/share/doc/usd/31.trek/Makefile
index d8fe835d891d..decaf628f4ae 100644
--- a/share/doc/usd/31.trek/Makefile
+++ b/share/doc/usd/31.trek/Makefile
@@ -1,5 +1,5 @@
 #	From: @(#)Makefile	8.1 (Berkeley) 6/8/93
-#	$Id: Makefile,v 1.1 1995/01/11 03:24:22 wollman Exp $
+#	$Id: Makefile,v 1.2 1995/01/14 19:56:16 jkh Exp $
 
 .if exists(${.CURDIR}/../../../../games)
 VOLUME=	usd/31.trek
@@ -18,6 +18,8 @@ all:
 
 install:
 
+distribute:
+
 clean:
 
 cleandir: