diff --git a/include/Makefile.am b/include/Makefile.am
index 0027386..3cc4b1d 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -8,4 +8,7 @@
 	osmocom/legacy_mgcp/osmux.h \
 	osmocom/mgcp_client/mgcp_client.h \
 	osmocom/mgcp_client/mgcp_common.h \
+	osmocom/mgcp/mgcp.h \
+	osmocom/mgcp/mgcp_internal.h \
+	osmocom/mgcp/osmux.h \
 	$(NULL)