diff --git a/sys/modules/mrsas/Makefile b/sys/modules/mrsas/Makefile
index c3c7580805fe..130a46a8ad5f 100644
--- a/sys/modules/mrsas/Makefile
+++ b/sys/modules/mrsas/Makefile
@@ -1,29 +1,28 @@
 # Makefile for mrsas driver
 # $FreeBSD$
 
 KMOD=mrsas
 .PATH: ${SRCTOP}/sys/dev/${KMOD}
 
 .if ${MACHINE_ARCH} == "i386" || ${MACHINE_ARCH} == "amd64"
 SUBDIR+= mrsas_linux
 .endif
 
 SRCS=mrsas.c mrsas_cam.c mrsas_ioctl.c mrsas_fp.c
 SRCS+=  device_if.h bus_if.h pci_if.h opt_cam.h opt_scsi.h
 
 #CFLAGS+= -MRSAS_DEBUG
 .include <bsd.kmod.mk>
 CFLAGS+= -fgnu89-inline
 
-TARGET_ARCH = ${MACHINE_ARCH}
-.if ${TARGET_ARCH} == "amd64"
+.if ${MACHINE_ARCH} == "amd64"
 CFLAGS+= -DCOMPAT_FREEBSD32
 .endif
 
 clean_cscope:
 	rm -f cscope*
 
 cscope:	clean_cscope
 	/usr/local/bin/cscope -b *.[ch]
 
 cleanall:	clean clean_cscope