diff --git a/FAQ.md b/FAQ.md
index a00b7c8b..dc770b75 100644
--- a/FAQ.md
+++ b/FAQ.md
@@ -129,4 +129,8 @@ Properly configure boot section size in Makefile. With wrong section size bootlo
 #   USBaspLoader     2048
 OPT_DEFS += -DBOOTLOADER_SIZE=4096
 ```
-http://geekhack.org/index.php?topic=12047.msg1292018#msg1292018
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+http://geekhack.org/index.php?topic=12047.msg1292018#msg1292018
+
+
+## Special Extra key doesn't work(System, Audio control keys)
+http://deskthority.net/workshop-f7/tmk-keyboard-firmware-collection-t4478-60.html#p157919
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