diff --git a/src/libosmo-mgcp/Makefile.am b/src/libosmo-mgcp/Makefile.am
index a98c391..587bdd4 100644
--- a/src/libosmo-mgcp/Makefile.am
+++ b/src/libosmo-mgcp/Makefile.am
@@ -35,6 +35,7 @@
 	mgcp_vty.c \
 	mgcp_osmux.c \
 	mgcp_sdp.c \
+	mgcp_codec.c \
 	mgcp_msg.c \
 	mgcp_conn.c \
 	mgcp_stat.c \