diff --git a/src/core/slavebase.cpp b/src/core/slavebase.cpp
--- a/src/core/slavebase.cpp
+++ b/src/core/slavebase.cpp
@@ -80,7 +80,7 @@
 {
 public:
     SlaveBase *q;
-    SlaveBasePrivate(SlaveBase *owner): q(owner), m_passwdServerClient(nullptr)
+    SlaveBasePrivate(SlaveBase *owner): q(owner), nextTimeoutMsecs(0), m_passwdServerClient(nullptr)
     {
         if (!qEnvironmentVariableIsEmpty("KIOSLAVE_ENABLE_TESTMODE")) {
             QStandardPaths::enableTestMode(true);
@@ -110,8 +110,9 @@
     KConfigGroup *configGroup;
     QUrl onHoldUrl;
 
-    QDateTime lastTimeout;
-    QDateTime nextTimeout;
+    QElapsedTimer lastTimeout;
+    QElapsedTimer nextTimeout;
+    qint64 nextTimeoutMsecs;
     KIO::filesize_t totalSize;
     KRemoteEncoding *remotefile;
     enum { Idle, InsideMethod, FinishedCalled, ErrorCalled } m_state;
@@ -273,18 +274,18 @@
 void SlaveBase::dispatchLoop()
 {
     while (!d->exit_loop) {
-        if (d->nextTimeout.isValid() && (d->nextTimeout < QDateTime::currentDateTime())) {
+        if (d->nextTimeout.isValid() && (d->nextTimeout.hasExpired(d->nextTimeoutMsecs))) {
             QByteArray data = d->timeoutData;
-            d->nextTimeout = QDateTime();
+            d->nextTimeout.invalidate();
             d->timeoutData = QByteArray();
             special(data);
         }
 
         Q_ASSERT(d->appConnection.inited());
 
         int ms = -1;
         if (d->nextTimeout.isValid()) {
-            ms = qMax<int>(QDateTime::currentDateTime().msecsTo(d->nextTimeout), 1);
+            ms = qMax<int>(d->nextTimeout.elapsed() - d->nextTimeoutMsecs, 1);
         }
 
         int ret = -1;
@@ -529,22 +530,20 @@
 {
     bool emitSignal = false;
 
-    QDateTime now = QDateTime::currentDateTime();
-
     if (_bytes == d->totalSize) {
         emitSignal = true;
     } else {
         if (d->lastTimeout.isValid()) {
-            emitSignal = d->lastTimeout.msecsTo(now) >= 100; // emit size 10 times a second
+            emitSignal = d->lastTimeout.hasExpired(100); // emit size 10 times a second
         } else {
             emitSignal = true;
         }
     }
 
     if (emitSignal) {
         KIO_DATA << KIO_FILESIZE_T(_bytes);
         send(INF_PROCESSED_SIZE, data);
-        d->lastTimeout = now;
+        d->lastTimeout.start();
     }
 
     //    d->processed_size = _bytes;
@@ -1045,12 +1044,15 @@
 
 void SlaveBase::setTimeoutSpecialCommand(int timeout, const QByteArray &data)
 {
+    d->nextTimeout.start();
+
     if (timeout > 0) {
-        d->nextTimeout = QDateTime::currentDateTime().addSecs(timeout);
+        d->nextTimeoutMsecs = timeout*1000; // from seconds to miliseconds
     } else if (timeout == 0) {
-        d->nextTimeout = QDateTime::currentDateTime().addSecs(1);    // Immediate timeout
+        d->nextTimeoutMsecs = 1000;  // Inmediate timeout
     } else {
-        d->nextTimeout = QDateTime();    // Canceled
+        d->nextTimeoutMsecs = 1;
+        d->nextTimeout.invalidate(); // Canceled
     }
 
     d->timeoutData = data;