diff --git a/libc/kernel/uapi/linux/rfkill.h b/libc/kernel/uapi/linux/rfkill.h
index 504f780..4e72938 100644
--- a/libc/kernel/uapi/linux/rfkill.h
+++ b/libc/kernel/uapi/linux/rfkill.h
@@ -40,11 +40,17 @@
   RFKILL_OP_CHANGE,
   RFKILL_OP_CHANGE_ALL,
 };
+enum rfkill_hard_block_reasons {
+  RFKILL_HARD_BLOCK_SIGNAL = 1 << 0,
+  RFKILL_HARD_BLOCK_NOT_OWNER = 1 << 1,
+};
 struct rfkill_event {
   __u32 idx;
   __u8 type;
   __u8 op;
-  __u8 soft, hard;
+  __u8 soft;
+  __u8 hard;
+  __u8 hard_block_reasons;
 } __attribute__((packed));
 #define RFKILL_EVENT_SIZE_V1 8
 #define RFKILL_IOC_MAGIC 'R'