diff --git a/plugins/scenes/opengl/scene_opengl.cpp b/plugins/scenes/opengl/scene_opengl.cpp
--- a/plugins/scenes/opengl/scene_opengl.cpp
+++ b/plugins/scenes/opengl/scene_opengl.cpp
@@ -798,7 +798,8 @@
         // movie aspect - two times ;-) It's a Fox format, though, so maybe we want to restrict
         // to 2.20:1 - Panavision - which has actually been used for interesting movies ...)
         // would be 57% of 5/4
-        foreach (const QRect &r, region.rects()) {
+        for (auto it = region.cbegin(), end = region.cend(); it != end; ++it) {
+            const QRect &r = *it;
 //                 damagedPixels += r.width() * r.height(); // combined window damage test
             damagedPixels = r.width() * r.height(); // experimental single window damage testing
             if (damagedPixels > fullRepaintLimit) {
@@ -1178,8 +1179,8 @@
         const QRegion filterRegion = region.translated(-x(), -y());
         // split all quads in bounding rect with the actual rects in the region
         foreach (const WindowQuad &quad, data.quads) {
-            foreach (const QRect &r, filterRegion.rects()) {
-                const QRectF rf(r);
+            for (auto it = filterRegion.cbegin(), end = filterRegion.cend(); it != end; ++it) {
+                const QRectF rf(*it);
                 const QRectF quadRect(QPointF(quad.left(), quad.top()), QPointF(quad.right(), quad.bottom()));
                 const QRectF &intersected = rf.intersected(quadRect);
                 if (intersected.isValid()) {