diff --git a/rn/MdWsSeiBlocoRN.php b/rn/MdWsSeiBlocoRN.php
index 6d8dbc3..495e8b5 100644
--- a/rn/MdWsSeiBlocoRN.php
+++ b/rn/MdWsSeiBlocoRN.php
@@ -263,7 +263,7 @@ class MdWsSeiBlocoRN extends InfraRN {
             if (!$relBlocoProtocoloDTOParam->isSetNumIdBloco()) {
                 throw new InfraException('O bloco deve ser informado.');
             }
-            if (!$relBlocoProtocoloDTOParam->isSetNumIdBloco()) {
+            if (!$relBlocoProtocoloDTOParam->isSetDblIdProtocolo()) {
                 throw new InfraException('O protocolo deve ser informado.');
             }
             if (!$relBlocoProtocoloDTOParam->isSetStrAnotacao()) {
--
libgit2 0.21.2