diff --git a/src/network/access/qftp.cpp b/src/network/access/qftp.cpp
index 74c95ecd5e..30bb04b768 100644
--- a/src/network/access/qftp.cpp
+++ b/src/network/access/qftp.cpp
@@ -611,7 +611,7 @@ bool QFtpDTP::parseDir(const QByteArray &buffer, const QString &userName, QUrlIn
     if (buffer.isEmpty())
         return false;
 
-    QString bufferStr = QString::fromLatin1(buffer).trimmed();
+    QString bufferStr = QString::fromUtf8(buffer).trimmed();
 
     // Unix style FTP servers
     QRegExp unixPattern(QLatin1String("^([\\-dl])([a-zA-Z\\-]{9,9})\\s+\\d+\\s+(\\S*)\\s+"
@@ -676,7 +676,7 @@ void QFtpDTP::socketReadyRead()
                 // does not exist, but rather write a text to the data socket
                 // -- try to catch these cases
                 if (line.endsWith("No such file or directory\r\n"))
-                    err = QString::fromLatin1(line);
+                    err = QString::fromUtf8(line);
             }
         }
     } else {
@@ -932,7 +932,7 @@ void QFtpPI::readyRead()
 
     while (commandSocket.canReadLine()) {
         // read line with respect to line continuation
-        QString line = QString::fromLatin1(commandSocket.readLine());
+        QString line = QString::fromUtf8(commandSocket.readLine());
         if (replyText.isEmpty()) {
             if (line.length() < 3) {
                 // protocol error
@@ -964,7 +964,7 @@ void QFtpPI::readyRead()
                 replyText += line;
             if (!commandSocket.canReadLine())
                 return;
-            line = QString::fromLatin1(commandSocket.readLine());
+            line = QString::fromUtf8(commandSocket.readLine());
             lineLeft4 = line.left(4);
         }
         replyText += line.mid(4); // strip reply code 'xyz '
@@ -1215,7 +1215,7 @@ bool QFtpPI::startNextCmd()
     qDebug("QFtpPI send: %s", currentCmd.left(currentCmd.length()-2).toLatin1().constData());
 #endif
     state = Waiting;
-    commandSocket.write(currentCmd.toLatin1());
+    commandSocket.write(currentCmd.toUtf8());
     return true;
 }
 
diff --git a/tests/auto/network/access/qftp/tst_qftp.cpp b/tests/auto/network/access/qftp/tst_qftp.cpp
index 795548ccc8..bfc5a73cd8 100644
--- a/tests/auto/network/access/qftp/tst_qftp.cpp
+++ b/tests/auto/network/access/qftp/tst_qftp.cpp
@@ -732,10 +732,11 @@ void tst_QFtp::put_data()
     QByteArray bigData( 10*1024*1024, 0 );
     bigData.fill( 'A' );
 
-    // test the two put() overloads in one routine
+    // test the two put() overloads in one routine with a file name containing
+    // U+0x00FC (latin small letter u with diaeresis) for QTBUG-52303, testing UTF-8
     for ( int i=0; i<2; i++ ) {
         QTest::newRow( QString("relPath01_%1").arg(i).toLatin1().constData() ) << QtNetworkSettings::serverName() << (uint)21 << QString() << QString()
-                << QString("qtest/upload/rel01_%1") << rfc3252
+                << (QLatin1String("qtest/upload/rel01_") + QChar(0xfc) + QLatin1String("%1")) << rfc3252
                 << (bool)(i==1) << 1;
         /*
     QTest::newRow( QString("relPath02_%1").arg(i).toLatin1().constData() ) << QtNetworkSettings::serverName() << (uint)21 << QString("ftptest")     << QString("password")