diff -urN batmand-r963/linux/modules/Makefile.kbuild batmand-r963.new/linux/modules/Makefile.kbuild
--- batmand-r963/linux/modules/Makefile.kbuild	2008-01-28 08:47:35.000000000 +0100
+++ batmand-r963.new/linux/modules/Makefile.kbuild	2008-03-02 18:24:49.000000000 +0100
@@ -3,7 +3,7 @@
 endif
 
 LINUX26:=2.6
-CFLAGS +=-DREVISION_VERSION=\"\ rv$(REVISION)\"
+EXTRA_CFLAGS +=-DREVISION_VERSION=\"\ rv$(REVISION)\"
 
 ifeq ($(strip $(findstring $(LINUX26),$(LINUX_VERSION))),$(LINUX26))