diff --git a/src/network/kernel/qnetworkinterface.cpp b/src/network/kernel/qnetworkinterface.cpp
index 70674e9adf..75a26848a6 100644
--- a/src/network/kernel/qnetworkinterface.cpp
+++ b/src/network/kernel/qnetworkinterface.cpp
@@ -706,7 +706,7 @@ int QNetworkInterface::index() const
 
     \sa QUdpSocket
 */
-int QNetworkInterface::maxTransmissionUnit() const
+int QNetworkInterface::maximumTransmissionUnit() const
 {
     return d ? d->mtu : 0;
 }
diff --git a/src/network/kernel/qnetworkinterface.h b/src/network/kernel/qnetworkinterface.h
index f7ef192dc0..148fd5e10d 100644
--- a/src/network/kernel/qnetworkinterface.h
+++ b/src/network/kernel/qnetworkinterface.h
@@ -153,7 +153,7 @@ public:
     bool isValid() const;
 
     int index() const;
-    int maxTransmissionUnit() const;
+    int maximumTransmissionUnit() const;
     QString name() const;
     QString humanReadableName() const;
     InterfaceFlags flags() const;
diff --git a/tests/auto/network/kernel/qnetworkinterface/tst_qnetworkinterface.cpp b/tests/auto/network/kernel/qnetworkinterface/tst_qnetworkinterface.cpp
index 0b4ed4870d..b73ed8eaec 100644
--- a/tests/auto/network/kernel/qnetworkinterface/tst_qnetworkinterface.cpp
+++ b/tests/auto/network/kernel/qnetworkinterface/tst_qnetworkinterface.cpp
@@ -143,7 +143,7 @@ void tst_QNetworkInterface::dump()
         qDebug() << "    flags:     " << qPrintable(flags);
         qDebug() << "    type:      " << i.type();
         qDebug() << "    hw address:" << qPrintable(i.hardwareAddress());
-        qDebug() << "    MTU:       " << i.maxTransmissionUnit();
+        qDebug() << "    MTU:       " << i.maximumTransmissionUnit();
 
         int count = 0;
         foreach (const QNetworkAddressEntry &e, i.addressEntries()) {
@@ -187,7 +187,7 @@ void tst_QNetworkInterface::consistencyCheck()
         if (iface.index())
             interfaceIndexes << iface.index();
 
-        QVERIFY(iface.maxTransmissionUnit() >= 0);
+        QVERIFY(iface.maximumTransmissionUnit() >= 0);
 
         const QList<QNetworkAddressEntry> addresses = iface.addressEntries();
         for (auto entry : addresses) {
@@ -275,7 +275,7 @@ void tst_QNetworkInterface::localAddress()
              << "pmtu" << pmtu;
 
     // check that the Path MTU is less than or equal the interface's MTU
-    QVERIFY(pmtu <= outgoingIface->maxTransmissionUnit());
+    QVERIFY(pmtu <= outgoingIface->maximumTransmissionUnit());
 }
 
 void tst_QNetworkInterface::interfaceFromXXX_data()