diff --git a/src/gui/painting/qrasterbackingstore.cpp b/src/gui/painting/qrasterbackingstore.cpp
index 49dbeae774..c1738ddcab 100644
--- a/src/gui/painting/qrasterbackingstore.cpp
+++ b/src/gui/painting/qrasterbackingstore.cpp
@@ -90,8 +90,8 @@ bool QRasterBackingStore::scroll(const QRegion &region, int dx, int dy)
     const qreal devicePixelRatio = m_image.devicePixelRatio();
     const QPoint delta(dx * devicePixelRatio, dy * devicePixelRatio);
 
-    for (const QRect &rect : region)
-        qt_scrollRectInImage(m_image, QRect(rect.topLeft() * devicePixelRatio, rect.size() * devicePixelRatio), delta);
+    const QRect rect = region.boundingRect();
+    qt_scrollRectInImage(m_image, QRect(rect.topLeft() * devicePixelRatio, rect.size() * devicePixelRatio), delta);
 
     return true;
 }
diff --git a/src/plugins/platforms/offscreen/qoffscreencommon.cpp b/src/plugins/platforms/offscreen/qoffscreencommon.cpp
index 76ebe79590..086b530e5f 100644
--- a/src/plugins/platforms/offscreen/qoffscreencommon.cpp
+++ b/src/plugins/platforms/offscreen/qoffscreencommon.cpp
@@ -197,8 +197,8 @@ bool QOffscreenBackingStore::scroll(const QRegion &area, int dx, int dy)
     if (m_image.isNull())
         return false;
 
-    for (const QRect &rect : area)
-        qt_scrollRectInImage(m_image, rect, QPoint(dx, dy));
+    const QRect rect = area.boundingRect();
+    qt_scrollRectInImage(m_image, rect, QPoint(dx, dy));
 
     return true;
 }
diff --git a/src/plugins/platforms/windows/qwindowsbackingstore.cpp b/src/plugins/platforms/windows/qwindowsbackingstore.cpp
index e42237db13..3274c8548e 100644
--- a/src/plugins/platforms/windows/qwindowsbackingstore.cpp
+++ b/src/plugins/platforms/windows/qwindowsbackingstore.cpp
@@ -182,8 +182,8 @@ bool QWindowsBackingStore::scroll(const QRegion &area, int dx, int dy)
         return false;
 
     const QPoint offset(dx, dy);
-    for (const QRect &rect : area)
-        qt_scrollRectInImage(m_image->image(), rect, offset);
+    const QRect rect = area.boundingRect();
+    qt_scrollRectInImage(m_image->image(), rect, offset);
 
     return true;
 }
diff --git a/src/plugins/platforms/xcb/qxcbbackingstore.cpp b/src/plugins/platforms/xcb/qxcbbackingstore.cpp
index 1ea64f9f92..fda97ad2b0 100644
--- a/src/plugins/platforms/xcb/qxcbbackingstore.cpp
+++ b/src/plugins/platforms/xcb/qxcbbackingstore.cpp
@@ -488,8 +488,8 @@ bool QXcbBackingStoreImage::scroll(const QRegion &area, int dx, int dy)
         if (hasShm())
             preparePaint(destinationRegion);
 
-        for (const QRect &rect : scrollArea)
-            qt_scrollRectInImage(m_qimage, rect, delta);
+        const QRect rect = scrollArea.boundingRect();
+        qt_scrollRectInImage(m_qimage, rect, delta);
     } else {
         ensureGC(m_xcb_pixmap);