diff --git a/Makefile.am b/Makefile.am
index 97be7e0..102e7c4 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -8,6 +8,7 @@
 	control_legacy.c \
 	control_dbus.c \
 	lpc.c \
+	protocol.c \
 	transport_mbox.c \
 	windows.c \
 	mtd.c