diff --git a/src/network/socket/qsocks5socketengine.cpp b/src/network/socket/qsocks5socketengine.cpp
index b0fdc63d663..d3b9a32b227 100644
--- a/src/network/socket/qsocks5socketengine.cpp
+++ b/src/network/socket/qsocks5socketengine.cpp
@@ -257,9 +257,9 @@ struct QSocks5ConnectData : public QSocks5Data
 struct QSocks5BindData : public QSocks5Data
 {
     QHostAddress localAddress;
-    quint16 localPort;
+    quint16 localPort = 0;
     QHostAddress peerAddress;
-    quint16 peerPort;
+    quint16 peerPort = 0;
     QElapsedTimer timeStamp;
 };
 
@@ -267,15 +267,15 @@ struct QSocks5RevivedDatagram
 {
     QByteArray data;
     QHostAddress address;
-    quint16 port;
+    quint16 port = 0;
 };
 
 #ifndef QT_NO_UDPSOCKET
 struct QSocks5UdpAssociateData : public QSocks5Data
 {
-    QUdpSocket *udpSocket;
+    QUdpSocket *udpSocket = nullptr;
     QHostAddress associateAddress;
-    quint16 associatePort;
+    quint16 associatePort = 0;
     QQueue<QSocks5RevivedDatagram> pendingDatagrams;
 };
 #endif