diff --git a/include/osmocom/msc/Makefile.am b/include/osmocom/msc/Makefile.am
index 0d7d45c..faf1048 100644
--- a/include/osmocom/msc/Makefile.am
+++ b/include/osmocom/msc/Makefile.am
@@ -39,6 +39,7 @@
 	rrlp.h \
 	rtp_stream.h \
 	sccp_ran.h \
+	sdp_msg.h \
 	sgs_iface.h \
 	sgs_server.h \
 	sgs_vty.h \