diff --git a/lib/core/address_validator.dart b/lib/core/address_validator.dart
index e043e3b1..ccc8b83a 100644
--- a/lib/core/address_validator.dart
+++ b/lib/core/address_validator.dart
@@ -60,7 +60,7 @@ class AddressValidator extends TextValidator {
       case CryptoCurrency.bnb:
         return [42];
       case CryptoCurrency.btc:
-        return [34, 42];
+        return [33, 34, 42];
       case CryptoCurrency.dai:
         return [42];
       case CryptoCurrency.dash: