diff --git a/include/osmocom/hlr/Makefile.am b/include/osmocom/hlr/Makefile.am
index 5c96ec8..b24f084 100644
--- a/include/osmocom/hlr/Makefile.am
+++ b/include/osmocom/hlr/Makefile.am
@@ -11,6 +11,7 @@
 	logging.h \
 	lu_fsm.h \
 	mslookup_server.h \
+	mslookup_server_mdns.h \
 	rand.h \
 	timestamp.h \
 	$(NULL)