diff --git a/configure.ac b/configure.ac
index 217df9f..57aecba 100644
--- a/configure.ac
+++ b/configure.ac
@@ -178,6 +178,7 @@
 	include/Makefile
 	include/osmocom/Makefile
 	include/osmocom/hlr/Makefile
+	include/osmocom/mslookup/Makefile
 	libosmo-gsup-client.pc
 	libosmo-mslookup.pc
 	sql/Makefile