diff --git a/applets/kicker/plugin/dashboardwindow.cpp b/applets/kicker/plugin/dashboardwindow.cpp
index eae502291..c030e7f65 100644
--- a/applets/kicker/plugin/dashboardwindow.cpp
+++ b/applets/kicker/plugin/dashboardwindow.cpp
@@ -19,7 +19,6 @@ DashboardWindow::DashboardWindow(QQuickItem *parent)
     , m_visualParentItem(nullptr)
     , m_visualParentWindow(nullptr)
 {
-    setClearBeforeRendering(true);
     setFlags(Qt::FramelessWindowHint);
 
     setIcon(QIcon::fromTheme(QStringLiteral("plasma")));
diff --git a/krunner/view.cpp b/krunner/view.cpp
index 17c260dec..9e7f2bdfe 100644
--- a/krunner/view.cpp
+++ b/krunner/view.cpp
@@ -40,7 +40,6 @@ View::View(QWindow *)
     , m_offset(.5)
     , m_floating(false)
 {
-    setClearBeforeRendering(true);
     setColor(QColor(Qt::transparent));
     setFlags(Qt::FramelessWindowHint | Qt::WindowStaysOnTopHint);
 
diff --git a/ksplash/ksplashqml/splashwindow.cpp b/ksplash/ksplashqml/splashwindow.cpp
index 2ef8f87b5..b2039f0e9 100644
--- a/ksplash/ksplashqml/splashwindow.cpp
+++ b/ksplash/ksplashqml/splashwindow.cpp
@@ -43,7 +43,6 @@ SplashWindow::SplashWindow(bool testing, bool window, const QString &theme, QScr
     setScreen(screen);
     setColor(Qt::transparent);
     setDefaultAlphaBuffer(true);
-    setClearBeforeRendering(true);
     setResizeMode(KQuickAddons::QuickViewSharedEngine::SizeRootObjectToView);
 
     if (!m_window) {
diff --git a/logout-greeter/shutdowndlg.cpp b/logout-greeter/shutdowndlg.cpp
index a22d115a4..7db76c515 100644
--- a/logout-greeter/shutdowndlg.cpp
+++ b/logout-greeter/shutdowndlg.cpp
@@ -61,7 +61,6 @@ KSMShutdownDlg::KSMShutdownDlg(QWindow *parent, KWorkSpace::ShutdownType sdtype,
 // having a popup here has severe side effects.
 {
     // window stuff
-    setClearBeforeRendering(true);
     setColor(QColor(Qt::transparent));
     setScreen(screen);
 
diff --git a/shell/panelview.cpp b/shell/panelview.cpp
index f74263de0..abfbe987d 100644
--- a/shell/panelview.cpp
+++ b/shell/panelview.cpp
@@ -63,7 +63,6 @@ PanelView::PanelView(ShellCorona *corona, QScreen *targetScreen, QWindow *parent
         setScreen(targetScreen);
     }
     setResizeMode(QuickViewSharedEngine::SizeRootObjectToView);
-    setClearBeforeRendering(true);
     setColor(QColor(Qt::transparent));
     setFlags(Qt::FramelessWindowHint | Qt::WindowDoesNotAcceptFocus);
     updateAdaptiveOpacityEnabled();