diff --git a/src/usb/hid/hid.c b/src/usb/hid/hid.c
index 7b7498c..0049499 100644
--- a/src/usb/hid/hid.c
+++ b/src/usb/hid/hid.c
@@ -184,6 +184,7 @@ int driver_process_usb_packet(uint16_t read) {
             }
             u2f_resp = (U2FHID_FRAME *)usb_get_tx();
             memcpy(u2f_resp, u2f_req, sizeof(U2FHID_FRAME));
+            sleep_ms(1000); //For blinking the device during 1 seg
             hid_write(64);
         }
         else if ((u2f_req->init.cmd == U2FHID_MSG && msg_packet.len == 0) || (msg_packet.len == msg_packet.current_len && msg_packet.len > 0)) {