diff --git a/Makefile.pre.in b/Makefile.pre.in
index 19a399ab2bf..47878256ed9 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -835,7 +835,8 @@ PLATDIR=	plat-$(MACHDEP)
 EXTRAPLATDIR= @EXTRAPLATDIR@
 MACHDEPS=	$(PLATDIR) $(EXTRAPLATDIR)
 XMLLIBSUBDIRS=  xml xml/dom xml/etree xml/parsers xml/sax
-LIBSUBDIRS=	tkinter site-packages test test/output test/data \
+LIBSUBDIRS=	tkinter tkinter/test tkinter/test/test_tkinter \
+                tkinter/test/test_ttk site-packages test test/data \
 		test/decimaltestdata test/xmltestdata \
 		encodings \
 		email email/mime email/test email/test/data \