diff --git a/app/src/ble_data_processer_utils.c b/app/src/ble_data_processer_utils.c
index 8401c3c..76943bf 100644
--- a/app/src/ble_data_processer_utils.c
+++ b/app/src/ble_data_processer_utils.c
@@ -66,15 +66,14 @@ void send_key_event(uint8_t keyid, uint8_t keyevent) {
 
   reportpacket->h1                      = PACKET_H1;
   reportpacket->h2                      = PACKET_H2;
+  reportpacket->packetlen               = sendlen;
   reportpacket->frame_type              = kproto_report;
   reportpacket->frame_index             = report_index++;
   reportpacket->cmd                     = kproto_report_key_event;
   reportpacket->data.key_event.keyid    = keyid;
   reportpacket->data.key_event.keyevent = keyevent;
-  reportpacket->packetlen               = sendlen;
   _bletxbuf[sendlen - 2]                = compute_sum(blereportbuf, sendlen - 2);
   _bletxbuf[sendlen - 1]                = PACKET_TAIL;
 
-  zdatachannel_data_send2(blereportbuf,  //
-                          HAND_ACID_BLE_BASE_SIZE + sizeof(reportpacket->data.key_event));
+  zdatachannel_data_send2(blereportbuf, sendlen);
 }
diff --git a/protocol b/protocol
index f8920e2..e5997c7 160000
--- a/protocol
+++ b/protocol
@@ -1 +1 @@
-Subproject commit f8920e28dcff342b07ae6abd243c400d59f8de62
+Subproject commit e5997c75812daaa49ddc95ffdaa06e90539ae0bb