diff --git a/src/main.cpp b/src/main.cpp
index 2a15c75..95ae309 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -83,8 +83,8 @@ void handle_serial_command(const String& cmd) {
         mux.show();
         Serial.println("[CMD] Pixel 1 WHITE (max brightness)");
     } else if (cmd == "usb") {
-        Serial.printf("[CMD] USB mounted: %s\n", TinyUSBDevice.mounted() ? "YES" : "NO");
-        Serial.printf("[CMD] USB ready: %s\n", TinyUSBDevice.ready() ? "YES" : "NO");
+        Serial.printf("[CMD] USB mounted: %s\n", USB.mounted() ? "YES" : "NO");
+        Serial.printf("[CMD] USB ready: %s\n", USB.ready() ? "YES" : "NO");
     } else if (cmd == "gpiotest") {
         Serial.println("[CMD] === Raw GPIO Test ===");
         uint8_t pins[] = {9, 10, 11, 12};