diff --git a/libk3b/projects/datacd/k3bdiritem.cpp b/libk3b/projects/datacd/k3bdiritem.cpp
--- a/libk3b/projects/datacd/k3bdiritem.cpp
+++ b/libk3b/projects/datacd/k3bdiritem.cpp
@@ -196,7 +196,7 @@
         }
 
         // filling the gap: move items from after removed range
-        qCopy( m_children.begin()+start+count, m_children.end(),
+        std::copy( m_children.begin()+start+count, m_children.end(),
                m_children.begin()+start );
 
         // remove unused space
diff --git a/libk3b/tools/qprocess/k3bqprocess.cpp b/libk3b/tools/qprocess/k3bqprocess.cpp
--- a/libk3b/tools/qprocess/k3bqprocess.cpp
+++ b/libk3b/tools/qprocess/k3bqprocess.cpp
@@ -1791,7 +1791,7 @@
 int K3bQProcess::execute(const QString &program, const QStringList &arguments)
 {
     QProcess process;
-    process.setReadChannelMode(::QProcess::ForwardedChannels);
+    process.setProcessChannelMode(::QProcess::ForwardedChannels);
     process.start(program, arguments);
     process.waitForFinished(-1);
     return process.exitCode();
@@ -1807,7 +1807,7 @@
 int K3bQProcess::execute(const QString &program)
 {
     QProcess process;
-    process.setReadChannelMode(::QProcess::ForwardedChannels);
+    process.setProcessChannelMode(::QProcess::ForwardedChannels);
     process.start(program);
     process.waitForFinished(-1);
     return process.exitCode();
diff --git a/src/k3b.cpp b/src/k3b.cpp
--- a/src/k3b.cpp
+++ b/src/k3b.cpp
@@ -176,7 +176,7 @@
             sum += sizes.at( i );
         }
 
-        qFill( sizes, sum / sizes.count() );
+        std::fill( sizes.begin(), sizes.end(), sum / sizes.count() );
         splitter->setSizes( sizes );
     }
 
diff --git a/src/k3bsplash.cpp b/src/k3bsplash.cpp
--- a/src/k3bsplash.cpp
+++ b/src/k3bsplash.cpp
@@ -24,8 +24,8 @@
 #include <QPainter>
 #include <QPixmap>
 #include <QApplication>
-#include <QDesktopWidget>
 #include <QLabel>
+#include <QScreen>
 #include <QVBoxLayout>
 
 K3b::Splash::Splash( QWidget* parent )
@@ -65,8 +65,8 @@
     // Set geometry, with support for Xinerama systems
     QRect r;
     r.setSize(sizeHint());
-    int ps = QApplication::desktop()->primaryScreen();
-    r.moveCenter( QApplication::desktop()->screenGeometry(ps).center() );
+    const QScreen *ps = QGuiApplication::primaryScreen();
+    r.moveCenter( ps->geometry().center() );
     setGeometry(r);
 }
 
diff --git a/src/projects/k3baudioeditorwidget.cpp b/src/projects/k3baudioeditorwidget.cpp
--- a/src/projects/k3baudioeditorwidget.cpp
+++ b/src/projects/k3baudioeditorwidget.cpp
@@ -270,7 +270,7 @@
         return -1;
 
     Range r( d->idCnt++, start, end, startFixed, endFixed, toolTip,
-             brush.style() != Qt::NoBrush ? brush : palette().background() );
+             brush.style() != Qt::NoBrush ? brush : palette().window() );
     d->ranges.append( r );
 
     // only update the changed range
@@ -402,7 +402,7 @@
 int K3b::AudioEditorWidget::addMarker( const K3b::Msf& pos, bool fixed, const QString& toolTip, const QColor& color )
 {
     if( pos < d->length ) {
-        Marker m( d->idCnt++, pos, fixed, color.isValid() ? color : palette().foreground().color(), toolTip );
+        Marker m( d->idCnt++, pos, fixed, color.isValid() ? color : palette().windowText().color(), toolTip );
         d->markers.append( m );
         return m.id;
     }