From 75682d96f6708db41c3f3b6f3bf4855cb8d008a7 Mon Sep 17 00:00:00 2001
From: Linar Yusupov <linar.r.yusupov@gmail.com>
Date: Mon, 5 Sep 2022 23:46:13 +0300
Subject: [PATCH] do not use 'colon' sign in the iSerialNumber field of USB
 descriptor

---
 cores/esp32/USB.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/cores/esp32/USB.cpp b/cores/esp32/USB.cpp
index a1fe50944db..6174f28d738 100644
--- a/cores/esp32/USB.cpp
+++ b/cores/esp32/USB.cpp
@@ -165,7 +165,7 @@ bool ESPUSB::begin(){
             StreamString s;
             uint8_t m[6];
             esp_efuse_mac_get_default(m);
-            s.printf("%02X:%02X:%02X:%02X:%02X:%02X", m[0], m[1], m[2], m[3], m[4], m[5]);
+            s.printf("%02X%02X%02X%02X%02X%02X", m[0], m[1], m[2], m[3], m[4], m[5]);
             serial_number = s;
         }
 #endif