diff --git a/effects/screenshot/screenshot.cpp b/effects/screenshot/screenshot.cpp
--- a/effects/screenshot/screenshot.cpp
+++ b/effects/screenshot/screenshot.cpp
@@ -229,7 +229,7 @@
 
                 // copy content from framebuffer into image
                 img = QImage(QSize(width, height), QImage::Format_ARGB32);
-                glReadnPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, img.byteCount(), (GLvoid*)img.bits());
+                glReadnPixels(0, 0, width, height, GL_RGBA, GL_UNSIGNED_BYTE, img.sizeInBytes(), (GLvoid*)img.bits());
                 GLRenderTarget::popRenderTarget();
                 ScreenShotEffect::convertFromGLImage(img, width, height);
             }
diff --git a/libkwineffects/kwinxrenderutils.cpp b/libkwineffects/kwinxrenderutils.cpp
--- a/libkwineffects/kwinxrenderutils.cpp
+++ b/libkwineffects/kwinxrenderutils.cpp
@@ -144,7 +144,7 @@
     xcb_gcontext_t cid = xcb_generate_id(c);
     xcb_create_gc(c, cid, xpix, 0, nullptr);
     xcb_put_image(c, XCB_IMAGE_FORMAT_Z_PIXMAP, xpix, cid, img.width(), img.height(),
-                  0, 0, 0, depth, img.byteCount(), img.constBits());
+                  0, 0, 0, depth, img.sizeInBytes(), img.constBits());
     xcb_free_gc(c, cid);
 
     d = new XRenderPictureData(createPicture(xpix, depth));
diff --git a/plugins/platforms/virtual/egl_gbm_backend.cpp b/plugins/platforms/virtual/egl_gbm_backend.cpp
--- a/plugins/platforms/virtual/egl_gbm_backend.cpp
+++ b/plugins/platforms/virtual/egl_gbm_backend.cpp
@@ -224,7 +224,7 @@
     glFlush();
     if (m_backend->saveFrames()) {
         QImage img = QImage(QSize(m_backBuffer->width(), m_backBuffer->height()), QImage::Format_ARGB32);
-        glReadnPixels(0, 0, m_backBuffer->width(), m_backBuffer->height(), GL_RGBA, GL_UNSIGNED_BYTE, img.byteCount(), (GLvoid*)img.bits());
+        glReadnPixels(0, 0, m_backBuffer->width(), m_backBuffer->height(), GL_RGBA, GL_UNSIGNED_BYTE, img.sizeInBytes(), (GLvoid*)img.bits());
         convertFromGLImage(img, m_backBuffer->width(), m_backBuffer->height());
         img.save(QStringLiteral("%1/%2.png").arg(m_backend->saveFrames()).arg(QString::number(m_frameCounter++)));
     }
diff --git a/plugins/platforms/x11/standalone/x11_decoration_renderer.cpp b/plugins/platforms/x11/standalone/x11_decoration_renderer.cpp
--- a/plugins/platforms/x11/standalone/x11_decoration_renderer.cpp
+++ b/plugins/platforms/x11/standalone/x11_decoration_renderer.cpp
@@ -94,7 +94,7 @@
         QImage image = renderToImage(geo);
         xcb_put_image(c, XCB_IMAGE_FORMAT_Z_PIXMAP, client()->client()->frameId(), m_gc,
                       image.width(), image.height(), geo.x(), geo.y(), 0, client()->client()->depth(),
-                      image.byteCount(), image.constBits());
+                      image.sizeInBytes(), image.constBits());
     };
     renderPart(left);
     renderPart(top);
diff --git a/plugins/platforms/x11/windowed/scene_qpainter_x11_backend.cpp b/plugins/platforms/x11/windowed/scene_qpainter_x11_backend.cpp
--- a/plugins/platforms/x11/windowed/scene_qpainter_x11_backend.cpp
+++ b/plugins/platforms/x11/windowed/scene_qpainter_x11_backend.cpp
@@ -87,7 +87,7 @@
         const QImage &buffer = (*it)->buffer;
         xcb_put_image(c, XCB_IMAGE_FORMAT_Z_PIXMAP, (*it)->window, m_gc,
                         buffer.width(), buffer.height(), 0, 0, 0, 24,
-                        buffer.byteCount(), buffer.constBits());
+                        buffer.sizeInBytes(), buffer.constBits());
     }
 }
 
diff --git a/plugins/platforms/x11/windowed/x11windowed_backend.cpp b/plugins/platforms/x11/windowed/x11windowed_backend.cpp
--- a/plugins/platforms/x11/windowed/x11windowed_backend.cpp
+++ b/plugins/platforms/x11/windowed/x11windowed_backend.cpp
@@ -480,7 +480,7 @@
     xcb_create_pixmap(m_connection, 32, pix, m_screen->root, img.width(), img.height());
     xcb_create_gc(m_connection, gc, pix, 0, nullptr);
 
-    xcb_put_image(m_connection, XCB_IMAGE_FORMAT_Z_PIXMAP, pix, gc, img.width(), img.height(), 0, 0, 0, 32, img.byteCount(), img.constBits());
+    xcb_put_image(m_connection, XCB_IMAGE_FORMAT_Z_PIXMAP, pix, gc, img.width(), img.height(), 0, 0, 0, 32, img.sizeInBytes(), img.constBits());
 
     XRenderPicture pic(pix, 32);
     xcb_render_create_cursor(m_connection, cid, pic, qRound(hotspot.x() * outputScale), qRound(hotspot.y() * outputScale));
diff --git a/plugins/scenes/xrender/scene_xrender.cpp b/plugins/scenes/xrender/scene_xrender.cpp
--- a/plugins/scenes/xrender/scene_xrender.cpp
+++ b/plugins/scenes/xrender/scene_xrender.cpp
@@ -1238,7 +1238,7 @@
         Q_ASSERT(image.devicePixelRatio() == 1);
         xcb_put_image(c, XCB_IMAGE_FORMAT_Z_PIXMAP, m_pixmaps[index], m_gc,
                       image.width(), image.height(), geo.x() - offset.x(), geo.y() - offset.y(), 0, 32,
-                      image.byteCount(), image.constBits());
+                      image.sizeInBytes(), image.constBits());
     };
     const QRect geometry = scheduled.boundingRect();
     renderPart(left.intersected(geometry),   left.topLeft(),   int(DecorationPart::Left));