diff --git a/Makefile.in b/Makefile.in
index c880f3a8b..04c15f691 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -16,7 +16,7 @@
 #    59 Temple Place - Suite 330
 #    Boston, MA 02111-1307, USA
 #
-#ident "$Id: Makefile.in,v 1.111 2002/01/05 04:36:43 steve Exp $"
+#ident "$Id: Makefile.in,v 1.112 2002/01/25 03:25:16 steve Exp $"
 #
 #
 SHELL = /bin/sh
@@ -86,7 +86,7 @@ endif
 check: all
 	for dir in $(SUBDIRS); do (cd $$dir ; $(MAKE) check); done
 	driver/iverilog -Ccheck.conf -ocheck.vvp -tvvp-check -B./ivlpp $(srcdir)/examples/hello.vl
-	vvp/vvp ./check.vvp | grep 'Hello, World'
+	vvp/vvp -M./vpi ./check.vvp | grep 'Hello, World'
 
 clean:
 	rm -f *.o parse.cc parse.cc.output parse.h dep/*.d lexor.cc lexor_keyword.cc ivl@EXEEXT@ libivl.a libvpi.a