diff --git a/firmware/main.c b/firmware/main.c
index b782101..5712c97 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -1932,7 +1932,7 @@ void main(void)
 
 				// signal interrupt
 				ext_int_assert();
-				delay_us(100);
+				delay_us(10);
 				ext_int_deassert();
 
 #if CONFIG_USB_STACK