diff --git a/src/cpp/MySQL/MySQLStatementImpl.cpp b/src/cpp/MySQL/MySQLStatementImpl.cpp
index 210bce7e8..5661f7194 100644
--- a/src/cpp/MySQL/MySQLStatementImpl.cpp
+++ b/src/cpp/MySQL/MySQLStatementImpl.cpp
@@ -133,6 +133,12 @@ void MySQLStatementImpl::bindImpl()
 	std::size_t pos = 0;
 	Poco::Data::AbstractBindingVec::iterator it = binds.begin();
 	Poco::Data::AbstractBindingVec::iterator itEnd = binds.end();
+	for (; it != itEnd; ++it) {
+		if (!(*it)->canBind()) {
+			printf("[MySQLStatementImpl::bindImpl] canBind return false, name: %s\n", (*it)->name().data());
+			break;
+		}
+	}
 	for (; it != itEnd && (*it)->canBind(); ++it)
 	{
 		(*it)->bind(pos);
diff --git a/src/cpp/MySQL/StatementExecutor.cpp b/src/cpp/MySQL/StatementExecutor.cpp
index 10fdeb4d0..db235c930 100644
--- a/src/cpp/MySQL/StatementExecutor.cpp
+++ b/src/cpp/MySQL/StatementExecutor.cpp
@@ -75,8 +75,10 @@ void StatementExecutor::bindParams(MYSQL_BIND* params, std::size_t count)
 	if (_state < STMT_COMPILED)
 		throw StatementException("Statement is not compiled yet");
 
-	if (count != mysql_stmt_param_count(_pHandle))
+	if (count != mysql_stmt_param_count(_pHandle)) {
+		printf("[StatementExecutor::bindParams] count: %d, count return from mysql: %d\n", count, mysql_stmt_param_count(_pHandle));
 		throw StatementException("wrong bind parameters count", 0, _query);
+	}
 
 	if (count == 0) return;