diff --git a/Makefile.am b/Makefile.am
index 1e1db3e..5d5e14f 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -15,3 +15,4 @@
 phosphor_user_manager_CXXFLAGS = $(SYSTEMD_CFLAGS) \
                                  $(PHOSPHOR_DBUS_INTERFACES_CFLAGS) \
                                  $(PHOSPHOR_LOGGING_CFLAGS)
+SUBDIRS = . test