diff --git a/Makefile.pre.in b/Makefile.pre.in
index 7ad634ac01162f..670887437360cc 100644
--- a/Makefile.pre.in
+++ b/Makefile.pre.in
@@ -1544,7 +1544,8 @@ LIBSUBDIRS=	asyncio \
 		wsgiref \
 		$(XMLLIBSUBDIRS) \
 		xmlrpc \
-		zoneinfo
+		zoneinfo \
+		__phello__
 TESTSUBDIRS=	ctypes/test \
 		distutils/tests \
 		idlelib/idle_test \