diff --git a/examples/firmware_check/firmware_check.ino b/examples/firmware_check/firmware_check.ino
index 2bdf348..b774ffd 100644
--- a/examples/firmware_check/firmware_check.ino
+++ b/examples/firmware_check/firmware_check.ino
@@ -62,7 +62,9 @@ void ShowReaderDetails() {
   byte v = mfrc522.PCD_ReadRegister(mfrc522.VersionReg);
   Serial.print(F("Firmware Version: 0x"));
   Serial.print(v, HEX);
-  if (v == 0x91)
+  if (v == 0x90)
+    Serial.print(F(" = v0.0"));
+  else if (v == 0x91)
     Serial.print(F(" = v1.0"));
   else if (v == 0x92)
     Serial.print(F(" = v2.0"));