diff --git a/mqueue.cpp b/mqueue.cpp
index 3e473025..814c459d 100644
--- a/mqueue.cpp
+++ b/mqueue.cpp
@@ -166,7 +166,8 @@ bool EqualityComparisonFilter::HandleMismatchDetected(bool blocking)
 	m_mismatchDetected = true;
 	if (m_throwIfNotEqual)
 		throw MismatchDetected();
-	return Output(1, (const byte *)"\0", 1, 0, blocking) != 0;
+	const byte b[1] = {0};
+	return Output(1, b, 1, 0, blocking) != 0;
 }
 
 NAMESPACE_END