diff --git a/stand/usb/Makefile b/stand/usb/Makefile
--- a/stand/usb/Makefile
+++ b/stand/usb/Makefile
@@ -35,7 +35,7 @@
 
 CFLAGS+=	-DBOOTPROG=\"usbloader\"
 CFLAGS+=	-ffunction-sections -fdata-sections
-CFLAGS+=	-Wformat -Wall
+CFLAGS+=	-Wformat -Wall -Wno-unused
 CFLAGS+=	-g
 CFLAGS+=	-fno-pic
 
diff --git a/stand/usb/test/Makefile b/stand/usb/test/Makefile
--- a/stand/usb/test/Makefile
+++ b/stand/usb/test/Makefile
@@ -35,6 +35,7 @@
 SRCS= 
 
 CFLAGS+= -Wall
+CFLAGS+= -Wno-error=missing-prototypes -Wno-error=unused-parameter
 CFLAGS+= -g
 
 .if ${MACHINE_CPUARCH} == "amd64"