diff --git a/package/ifxos/patches/100-portability.patch b/package/ifxos/patches/100-portability.patch
index 51d6bbd165..bda6f253e2 100644
--- a/package/ifxos/patches/100-portability.patch
+++ b/package/ifxos/patches/100-portability.patch
@@ -1,8 +1,6 @@
-Index: lib_ifxos-1.5.12/src/Makefile.am
-===================================================================
---- lib_ifxos-1.5.12.orig/src/Makefile.am	2010-01-08 18:12:15.000000000 +0100
-+++ lib_ifxos-1.5.12/src/Makefile.am	2010-03-31 18:56:12.000000000 +0200
-@@ -639,7 +639,7 @@
+--- a/src/Makefile.am
++++ b/src/Makefile.am
+@@ -639,7 +639,7 @@ if KERNEL_2_6
  drv_ifxos_OBJS = "$(subst .c,.o,$(filter %.c,$(drv_ifxos_SOURCES)))"
  
  drv_ifxos.ko: $(drv_ifxos_SOURCES)
@@ -11,7 +9,7 @@ Index: lib_ifxos-1.5.12/src/Makefile.am
  	if test ! -e common/ifxos_debug.c ; then \
  		echo "copy source files (as links only!)"; \
  		for f in $(filter %.c,$(drv_ifxos_SOURCES)); do \
-@@ -647,10 +647,10 @@
+@@ -647,10 +647,10 @@ drv_ifxos.ko: $(drv_ifxos_SOURCES)
  			cp -s $(addprefix @abs_srcdir@/,$$f) $(PWD)/`dirname $$f`/ ; \
  		done \
  	fi
@@ -26,3 +24,14 @@ Index: lib_ifxos-1.5.12/src/Makefile.am
  	$(MAKE) ARCH=@KERNEL_ARCH@ -C @KERNEL_BUILD_PATH@ O=@KERNEL_BUILD_PATH@ M=$(PWD) modules
  
  clean-generic:
+--- a/configure.in
++++ b/configure.in
+@@ -64,7 +64,7 @@ dnl Set kernel build path
+ AC_ARG_ENABLE(kernelbuild,
+ 	AS_HELP_STRING(--enable-kernelbuild=x,Set the target kernel build path (only for kernel 2.6.x)),
+ 	[
+-		if test -e $enableval/include/linux/autoconf.h; then
++		if test -e $enableval/include/{linux,generated}/autoconf.h; then
+ 			AC_SUBST([KERNEL_BUILD_PATH],[$enableval])
+ 		else
+ 			AC_MSG_ERROR([The kernel build directory is not valid or not configured!])