diff --git a/src/usb_descriptors.cpp b/src/usb_descriptors.cpp
index cb3412b..2f4a073 100644
--- a/src/usb_descriptors.cpp
+++ b/src/usb_descriptors.cpp
@@ -57,7 +57,7 @@ tusb_desc_device_t desc_device =
 
     .iManufacturer = 0x01,
     .iProduct = 0x02,
-    .iSerialNumber = 0x03,
+    .iSerialNumber = 0x00,
 
     .bNumConfigurations = 0x01
 };