--- Makefile.old	2008-03-20 11:16:27.000000000 +0100
+++ Makefile	2008-03-20 11:14:40.000000000 +0100
@@ -13,8 +13,7 @@
 # obj-m                           += acerhk/
 CONFIG_ACERHK?=m
 obj-$(CONFIG_ACERHK) += acerhk.o
-
-CFLAGS+=-c -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -pipe
+EXTRA_CFLAGS+=-c -Wall -Wstrict-prototypes -Wno-trigraphs -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-common -pipe
 INCLUDE=-I$(KERNELSRC)/include
 
 ifeq ($(KERNELMAJOR), 2.6)