diff --git a/Makefile.pre.in b/Makefile.pre.in
index d988d2a..53748ee 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -576,6 +576,7 @@
 MACHDEPS=	$(PLATDIR)
 XMLLIBSUBDIRS=  xml xml/dom xml/parsers xml/sax
 LIBSUBDIRS=	lib-old lib-tk site-packages test test/output encodings \
+		email compiler \
 		distutils distutils/command $(XMLLIBSUBDIRS) curses $(MACHDEPS)
 libinstall:	$(PYTHON) $(srcdir)/Lib/$(PLATDIR)
 	@for i in $(SCRIPTDIR) $(LIBDEST); \