diff --git a/autotests/integration/kwin_wayland_test.h b/autotests/integration/kwin_wayland_test.h
--- a/autotests/integration/kwin_wayland_test.h
+++ b/autotests/integration/kwin_wayland_test.h
@@ -129,7 +129,7 @@
  * Creates a shared memory buffer of @p size in @p color and attaches it to the @p surface.
  * The @p surface gets damaged and committed, thus it's rendered.
  **/
-void render(KWayland::Client::Surface *surface, const QSize &size, const QColor &color, const QImage::Format &format = QImage::Format_ARGB32);
+void render(KWayland::Client::Surface *surface, const QSize &size, const QColor &color, const QImage::Format &format = QImage::Format_ARGB32_Premultiplied);
 
 /**
  * Creates a shared memory buffer using the supplied image @p img and attaches it to the @p surface
diff --git a/autotests/integration/pointer_input.cpp b/autotests/integration/pointer_input.cpp
--- a/autotests/integration/pointer_input.cpp
+++ b/autotests/integration/pointer_input.cpp
@@ -848,7 +848,7 @@
     QVERIFY(cursorSurface);
     QSignalSpy cursorRenderedSpy(cursorSurface, &Surface::frameRendered);
     QVERIFY(cursorRenderedSpy.isValid());
-    QImage red = QImage(QSize(10, 10), QImage::Format_ARGB32);
+    QImage red = QImage(QSize(10, 10), QImage::Format_ARGB32_Premultiplied);
     red.fill(Qt::red);
     cursorSurface->attachBuffer(Test::waylandShmPool()->createBuffer(red));
     cursorSurface->damage(QRect(0, 0, 10, 10));
@@ -864,7 +864,7 @@
     QCOMPARE(p->cursorImage(), red);
 
     // change the buffer
-    QImage blue = QImage(QSize(10, 10), QImage::Format_ARGB32);
+    QImage blue = QImage(QSize(10, 10), QImage::Format_ARGB32_Premultiplied);
     blue.fill(Qt::blue);
     auto b = Test::waylandShmPool()->createBuffer(blue);
     cursorSurface->attachBuffer(b);
diff --git a/autotests/integration/scene_qpainter_test.cpp b/autotests/integration/scene_qpainter_test.cpp
--- a/autotests/integration/scene_qpainter_test.cpp
+++ b/autotests/integration/scene_qpainter_test.cpp
@@ -226,7 +226,7 @@
 
     //draw a blue square@400x600 with red rectangle@200x200 in the middle
     const QSize size(400,600);
-    QImage img(size, QImage::Format_ARGB32);
+    QImage img(size, QImage::Format_ARGB32_Premultiplied);
     img.fill(Qt::blue);
     QPainter surfacePainter(&img);
     surfacePainter.fillRect(200,300,200,200, Qt::red);