diff --git a/package/kernel/mac80211/Makefile b/package/kernel/mac80211/Makefile
index af059cc680f..8faf5b65b5f 100644
--- a/package/kernel/mac80211/Makefile
+++ b/package/kernel/mac80211/Makefile
@@ -11,7 +11,7 @@ include $(INCLUDE_DIR)/kernel.mk
 PKG_NAME:=mac80211
 
 PKG_VERSION:=4.19.137-1
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 PKG_SOURCE_URL:=@KERNEL/linux/kernel/projects/backports/stable/v4.19.137/
 PKG_HASH:=dc5eea4f77fc5c43b69e38f46fbf766880fa4bdeef83dcc8dcc85aa6b645bb7c
 
diff --git a/package/kernel/mac80211/patches/subsys/090-wireless-Use-linux-stddef.h-instead-of-stddef.h.patch b/package/kernel/mac80211/patches/subsys/090-wireless-Use-linux-stddef.h-instead-of-stddef.h.patch
new file mode 100644
index 00000000000..1661d2726b7
--- /dev/null
+++ b/package/kernel/mac80211/patches/subsys/090-wireless-Use-linux-stddef.h-instead-of-stddef.h.patch
@@ -0,0 +1,33 @@
+From 1b9ae0c92925ac40489be526d67d0010d0724ce0 Mon Sep 17 00:00:00 2001
+From: Hauke Mehrtens <hauke@hauke-m.de>
+Date: Thu, 21 May 2020 22:14:22 +0200
+Subject: [PATCH] wireless: Use linux/stddef.h instead of stddef.h
+
+When compiling inside the kernel include linux/stddef.h instead of
+stddef.h. When I compile this header file in backports for power PC I
+run into a conflict with ptrdiff_t. I was unable to reproduce this in
+mainline kernel. I still would like to fix this problem in the kernel.
+
+Fixes: 6989310f5d43 ("wireless: Use offsetof instead of custom macro.")
+Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
+Link: https://lore.kernel.org/r/20200521201422.16493-1-hauke@hauke-m.de
+Signed-off-by: Johannes Berg <johannes.berg@intel.com>
+---
+ include/uapi/linux/wireless.h | 6 +++++-
+ 1 file changed, 5 insertions(+), 1 deletion(-)
+
+--- a/include/uapi/linux/wireless.h
++++ b/include/uapi/linux/wireless.h
+@@ -74,7 +74,11 @@
+ #include <linux/socket.h>		/* for "struct sockaddr" et al	*/
+ #include <linux/if.h>			/* for IFNAMSIZ and co... */
+ 
+-#include <stddef.h>                     /* for offsetof */
++#ifdef __KERNEL__
++#	include <linux/stddef.h>	/* for offsetof */
++#else
++#	include <stddef.h>		/* for offsetof */
++#endif
+ 
+ /***************************** VERSION *****************************/
+ /*