diff --git a/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0-tmk b/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0-tmk
index a98e6f72..85af76f6 160000
--- a/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0-tmk
+++ b/tmk_core/protocol/usb_hid/USB_Host_Shield_2.0-tmk
@@ -1 +1 @@
-Subproject commit a98e6f720683b2514cf4dfe0f04a65dfdcc508e1
+Subproject commit 85af76f6c9967d7457dbf5aa442a6a67e3e9ecf1
diff --git a/tmk_core/protocol/usb_hid/parser.cpp b/tmk_core/protocol/usb_hid/parser.cpp
index bc2744d0..51746e14 100644
--- a/tmk_core/protocol/usb_hid/parser.cpp
+++ b/tmk_core/protocol/usb_hid/parser.cpp
@@ -12,6 +12,12 @@ void KBDReportParser::Parse(USBHID *hid, bool is_rpt_id, uint8_t len, uint8_t *b
     }
     xprintf("\r\n");
 
+    // boot keyboard report length should be 8
+    if (len != 8) {
+        xprintf(" ignored\r\n");
+        return;
+    }
+
     // Rollover error
     // Cherry: 0101010101010101
     // https://geekhack.org/index.php?topic=69169.msg2638223#msg2638223