diff --git a/firmware/baseband/sd_over_usb/scsi.c b/firmware/baseband/sd_over_usb/scsi.c
index a71e1c0b6..7b4339fd9 100644
--- a/firmware/baseband/sd_over_usb/scsi.c
+++ b/firmware/baseband/sd_over_usb/scsi.c
@@ -26,11 +26,12 @@
 #include <libopencm3/lpc43xx/scu.h>
 #include <libopencm3/lpc43xx/rgu.h>
 #include <libopencm3/lpc43xx/wwdt.h>
-#include "delay.h"
 #include "string.h"
 
 volatile bool usb_bulk_block_done = false;
 
+void delay(uint32_t duration);
+
 void usb_bulk_block_cb(void* user_data, unsigned int bytes_transferred) {
     usb_bulk_block_done = true;
 
diff --git a/hackrf b/hackrf
index ba2045a86..a5fd674a9 160000
--- a/hackrf
+++ b/hackrf
@@ -1 +1 @@
-Subproject commit ba2045a866387d9108c3c82b8ec9c13494d2f839
+Subproject commit a5fd674a9f48a5da6955be8a5c440bec23a0b848