diff --git a/stand/usb/Makefile b/stand/usb/Makefile
index 0a1c9e0022ee10..a9c20fc340ad9f 100644
--- a/stand/usb/Makefile
+++ b/stand/usb/Makefile
@@ -35,7 +35,7 @@ INTERNALLIB=
 
 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
index 74e501a39ae7da..d92ef6dddecba4 100644
--- a/stand/usb/test/Makefile
+++ b/stand/usb/test/Makefile
@@ -35,6 +35,7 @@ PROG=	usbloader
 SRCS= 
 
 CFLAGS+= -Wall
+CFLAGS+= -Wno-error=missing-prototypes -Wno-error=unused-parameter
 CFLAGS+= -g
 
 .if ${MACHINE_CPUARCH} == "amd64"