diff --git a/Makefile.pre.in b/Makefile.pre.in
index 333f348..3257bf9 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -626,7 +626,7 @@
 PLATMACPATH=:plat-mac:plat-mac/lib-scriptpackages
 LIBSUBDIRS=	lib-old lib-tk site-packages test test/output test/data \
 		encodings email email/test email/test/data compiler hotshot \
-		logging bsddb bsddb/test \
+		logging bsddb bsddb/test csv \
 		distutils distutils/command $(XMLLIBSUBDIRS) curses $(MACHDEPS)
 libinstall:	$(BUILDPYTHON) $(srcdir)/Lib/$(PLATDIR)
 	@for i in $(SCRIPTDIR) $(LIBDEST); \