diff --git a/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp b/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp
index 8d5b977d586..dc7ff67086f 100644
--- a/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp
+++ b/src/plugins/platforms/wayland/qwaylandshmbackingstore.cpp
@@ -47,6 +47,7 @@
 #include <QtCore/qstandardpaths.h>
 #include <QtCore/qtemporaryfile.h>
 #include <QtGui/QPainter>
+#include <QtGui/QTransform>
 #include <QMutexLocker>
 
 #include <QtWaylandClient/private/wayland-wayland-client-protocol.h>
@@ -328,7 +329,7 @@ void QWaylandShmBackingStore::updateDecorations()
     qreal dp = sourceImage.devicePixelRatio();
     int dpWidth = int(sourceImage.width() / dp);
     int dpHeight = int(sourceImage.height() / dp);
-    QMatrix sourceMatrix;
+    QTransform sourceMatrix;
     sourceMatrix.scale(dp, dp);
     QRect target; // needs to be in device independent pixels