diff --git a/libc/kernel/common/linux/usb/f_accessory.h b/libc/kernel/common/linux/usb/f_accessory.h
index eaf8c4d..7ee9b7f 100644
--- a/libc/kernel/common/linux/usb/f_accessory.h
+++ b/libc/kernel/common/linux/usb/f_accessory.h
@@ -28,6 +28,7 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ACCESSORY_STRING_VERSION 3
 #define ACCESSORY_STRING_URI 4
+#define ACCESSORY_STRING_SERIAL 5
 #define ACCESSORY_GET_PROTOCOL 51
 #define ACCESSORY_SEND_STRING 52
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
@@ -38,4 +39,5 @@
 /* WARNING: DO NOT EDIT, AUTO-GENERATED CODE - SEE TOP FOR INSTRUCTIONS */
 #define ACCESSORY_GET_STRING_VERSION _IOW('M', 4, char[256])
 #define ACCESSORY_GET_STRING_URI _IOW('M', 5, char[256])
+#define ACCESSORY_GET_STRING_SERIAL _IOW('M', 6, char[256])
 #endif