diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c
index 2451a862ba..807d441351 100644
--- a/firmware/drivers/ata.c
+++ b/firmware/drivers/ata.c
@@ -98,7 +98,7 @@ static unsigned char delayed_sector[SECTOR_SIZE];
 static int delayed_sector_num;
 
 static long last_user_activity = -1;
-static long last_disk_activity = -1;
+long last_disk_activity = -1;
 
 static int multisectors; /* number of supported multisectors */
 static unsigned short identify_info[SECTOR_SIZE];
diff --git a/firmware/drivers/ata.h b/firmware/drivers/ata.h
index da5c5e3e58..df4461e2f5 100644
--- a/firmware/drivers/ata.h
+++ b/firmware/drivers/ata.h
@@ -45,4 +45,6 @@ extern void ata_delayed_write(unsigned long sector, void* buf);
 extern void ata_flush(void);
 extern void ata_spin(void);
 
+extern long last_disk_activity;
+
 #endif