$FreeBSD$

--- wct4xxp/Makefile
+++ wct4xxp/Makefile
@@ -5,6 +5,7 @@
 KMOD=wct4xxp
 CFLAGS+=-I../zaptel -g
 SRCS+=device_if.h bus_if.h isa_if.h pci_if.h 
+WERROR=	-Wall
 
 load: wct4xxp.ko
 	kldload ./wct4xxp.ko