1 files changed, 2 insertions, 2 deletions
diff --git a/examples/device/webusb_serial/src/usb_descriptors.c b/examples/device/webusb_serial/src/usb_descriptors.c
index a61c62c93..a1d5cd9b9 100644
--- a/examples/device/webusb_serial/src/usb_descriptors.c
+++ b/examples/device/webusb_serial/src/usb_descriptors.c
@@ -230,8 +230,8 @@ uint16_t const* tud_descriptor_string_cb(uint8_t index)
     }
   }
 
-  // first byte is len, second byte is string type
-  _desc_str[0] = TUD_DESC_STR_HEADER(chr_count);
+  // first byte is length (including header), second byte is string type
+  _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
 
   return _desc_str;
 }