diff --git a/bacnet-stack/ports/linux/mstpsnap.mak b/bacnet-stack/ports/linux/mstpsnap.mak
index a7df8ecf..809e1193 100644
--- a/bacnet-stack/ports/linux/mstpsnap.mak
+++ b/bacnet-stack/ports/linux/mstpsnap.mak
@@ -38,6 +38,7 @@ SRCS = mstpsnap.c \
 	${BACNET_PORT_DIR}/timer.c \
 	${BACNET_SOURCE_DIR}/bacint.c \
 	${BACNET_SOURCE_DIR}/mstp.c \
+	${BACNET_SOURCE_DIR}/fifo.c \
 	${BACNET_SOURCE_DIR}/mstptext.c \
 	${BACNET_SOURCE_DIR}/debug.c \
 	${BACNET_SOURCE_DIR}/indtext.c \