diff --git a/firmware/backlight.c b/firmware/backlight.c
index 61035b33f7..69907cf8d0 100644
--- a/firmware/backlight.c
+++ b/firmware/backlight.c
@@ -30,7 +30,7 @@
 #define BACKLIGHT_OFF 2
 
 static void backlight_thread(void);
-static char backlight_stack[0x100];
+static char backlight_stack[0x400];
 static struct event_queue backlight_queue;
 
 static int backlight_timer;
diff --git a/firmware/usb.c b/firmware/usb.c
index 7516cebd6b..01b14ffa78 100644
--- a/firmware/usb.c
+++ b/firmware/usb.c
@@ -54,7 +54,7 @@ static int countdown;
 
 static int usb_state;
 
-static char usb_stack[0x200];
+static char usb_stack[0x800];
 static struct event_queue usb_queue;
 static bool last_usb_status;
 static bool usb_monitor_enabled;