diff --git a/usr.bin/su/Makefile b/usr.bin/su/Makefile
index 846fb5ff6785..7aa9d361f2a3 100644
--- a/usr.bin/su/Makefile
+++ b/usr.bin/su/Makefile
@@ -1,4 +1,5 @@
 #	@(#)Makefile	8.1 (Berkeley) 7/19/93
+#	$Id$
 
 PROG=	su
 SRCS=	su.c