diff --git a/openbsc/src/Makefile.am b/openbsc/src/Makefile.am
index f4d1c01..2c1d37a 100644
--- a/openbsc/src/Makefile.am
+++ b/openbsc/src/Makefile.am
@@ -42,7 +42,7 @@
 isdnsync_SOURCES = isdnsync.c
 
 bsc_mgcp_SOURCES = mgcp/mgcp_main.c mgcp/mgcp_protocol.c mgcp/mgcp_network.c mgcp/mgcp_vty.c \
-		   debug.c telnet_interface.c
+		   debug.c telnet_interface.c vty_interface_cmds.c
 bsc_mgcp_LDADD = libvty.a
 
 ipaccess_proxy_SOURCES = ipaccess/ipaccess-proxy.c debug.c