diff --git a/configure.ac b/configure.ac
index 349c8db..7c63437 100644
--- a/configure.ac
+++ b/configure.ac
@@ -209,4 +209,5 @@
     doc/manuals/Makefile
     contrib/Makefile
     contrib/systemd/Makefile
+    contrib/osmo-mgw.spec
     Makefile)