diff --git a/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.cpp b/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.cpp
index de46be9ea..36b6e9c38 100644
--- a/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.cpp
+++ b/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.cpp
@@ -607,11 +607,27 @@ QtKeyboardMap OSGViewport::Hidden::keyMap = QtKeyboardMap();
 OSGViewport::OSGViewport(QQuickItem *parent) : Inherited(parent), h(new Hidden(this))
 {
     // setClearBeforeRendering(false);
+#if QT_VERSION >= QT_VERSION_CHECK(5, 6, 0)
     setMirrorVertically(true);
+#endif
     setAcceptHoverEvents(true);
     setAcceptedMouseButtons(Qt::AllButtons);
 }
 
+#if QT_VERSION < QT_VERSION_CHECK(5, 6, 0)
+QSGNode *OSGViewport::updatePaintNode(QSGNode *node, QQuickItem::UpdatePaintNodeData *nodeData)
+{
+    if (!node) {
+        node = QQuickFramebufferObject::updatePaintNode(node, nodeData);
+        QSGSimpleTextureNode *n = static_cast<QSGSimpleTextureNode *>(node);
+        if (n)
+            n->setTextureCoordinatesTransform(QSGSimpleTextureNode::MirrorVertically);
+        return node;
+    }
+    return QQuickFramebufferObject::updatePaintNode(node, nodeData);
+}
+#endif
+
 OSGViewport::~OSGViewport()
 {
     delete h;
diff --git a/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.hpp b/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.hpp
index 46e6d366e..35a7e142c 100644
--- a/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.hpp
+++ b/ground/gcs/src/libs/osgearth/osgQtQuick/OSGViewport.hpp
@@ -93,6 +93,9 @@ signals:
     void busyChanged(bool busy);
 
 protected:
+#if QT_VERSION < QT_VERSION_CHECK(5, 6, 0)
+    QSGNode *updatePaintNode(QSGNode *node, QQuickItem::UpdatePaintNodeData *nodeData) override;
+#endif
     // QQuickItem
     void mousePressEvent(QMouseEvent *event);
     void mouseMoveEvent(QMouseEvent *event);