diff --git a/vpi/Makefile.in b/vpi/Makefile.in
index f51cbf9dc..166c8169e 100644
--- a/vpi/Makefile.in
+++ b/vpi/Makefile.in
@@ -82,7 +82,7 @@ check: all
 clean:
 	rm -rf *.o sys_readmem_lex.c dep system.vpi
 	rm -f sdf_lexor.c sdf_parse.c sdf_parse.output sdf_parse.h
-	rm -f va_math.vpi v2005_math.vpi
+	rm -f va_math.vpi v2005_math.vpi v2009.vpi
 
 distclean: clean
 	rm -f Makefile config.log