diff --git a/tests/Makefile.am b/tests/Makefile.am
index e0326c968c37e4eb87c972a5ceb8f7f1f6f44535..dd56e28c4fb708ee5c888954fb27725d757760fa 100644
--- a/tests/Makefile.am
+++ b/tests/Makefile.am
@@ -2,7 +2,7 @@ EXTRA_DIST = ftpserver.pl httpserver.pl httpsserver.pl runtests.pl \
 	     ftpsserver.pl stunnel.pm getpart.pm FILEFORMAT README \
 	     stunnel.pem memanalyze.pl
 
-SUBDIRS = data server
+SUBDIRS = data server libtest
 
 PERLFLAGS = -I$(srcdir)