diff --git a/src/network/kernel/qhostaddress.cpp b/src/network/kernel/qhostaddress.cpp
index 27b5f570dce..fba91c62c80 100644
--- a/src/network/kernel/qhostaddress.cpp
+++ b/src/network/kernel/qhostaddress.cpp
@@ -574,7 +574,8 @@ QHostAddress &QHostAddress::operator=(SpecialAddress address)
 */
 
 /*!
-    Sets the host address to null.
+    Sets the host address to null and sets the protocol to
+    QAbstractSocket::UnknownNetworkLayerProtocol.
 
     \sa QHostAddress::Null
 */