diff --git a/pkg/smartcontract/param_type.go b/pkg/smartcontract/param_type.go
index eb7c7b2b7..20b13df43 100644
--- a/pkg/smartcontract/param_type.go
+++ b/pkg/smartcontract/param_type.go
@@ -49,7 +49,7 @@ func (pt ParamType) String() string {
 	case Hash256Type:
 		return "Hash256"
 	case ByteArrayType:
-		return "ByteString"
+		return "ByteArray"
 	case PublicKeyType:
 		return "PublicKey"
 	case StringType: