diff --git a/firmware/main.c b/firmware/main.c
index 91f1768..28c3a55 100644
--- a/firmware/main.c
+++ b/firmware/main.c
@@ -2082,7 +2082,7 @@ void main(void)
 
 				// signal interrupt
 				ext_int_assert();
-				delay_us(10);
+				delay_us(100);
 				ext_int_deassert();
 #if CONFIG_USB_STACK
 				usb_key_change = 1;