diff --git a/usr.bin/tclsh/Makefile b/usr.bin/tclsh/Makefile
index db56a03f0f25..2ef52e63efaa 100644
--- a/usr.bin/tclsh/Makefile
+++ b/usr.bin/tclsh/Makefile
@@ -1,4 +1,4 @@
-# $Id$
+# $Id: Makefile,v 1.3 1997/02/22 19:57:21 peter Exp $
 
 PROG=   tclsh
 SRCS=   tclAppInit.c
@@ -14,6 +14,7 @@ CLEANFILES=     ${MAN1}
 tclsh.1:        ${.CURDIR}/../../contrib/tcl/doc/tclsh.1
 	sed '/\.so *man.macros/s;.*;.so /usr/share/tmac/tcl.macros;' < $> > $@
 
+CFLAGS+= -I/usr/include/tcl
 LDADD+= -ltcl -lm
 DPADD+= ${LIBTCL} ${LIBM}