diff --git a/libraries/ui/src/QmlWindowClass.cpp b/libraries/ui/src/QmlWindowClass.cpp
index c60e4fa698..c0e94058ae 100644
--- a/libraries/ui/src/QmlWindowClass.cpp
+++ b/libraries/ui/src/QmlWindowClass.cpp
@@ -122,12 +122,15 @@ void QmlWindowClass::initQml(QVariantMap properties) {
             object->setProperty(OFFSCREEN_VISIBILITY_PROPERTY, visible);
             object->setProperty(SOURCE_PROPERTY, _source);
 
+            const QMetaObject *metaObject = _qmlWindow->metaObject();
             // Forward messages received from QML on to the script
             connect(_qmlWindow, SIGNAL(sendToScript(QVariant)), this, SLOT(qmlToScript(const QVariant&)), Qt::QueuedConnection);
             connect(_qmlWindow, SIGNAL(visibleChanged()), this, SIGNAL(visibleChanged()), Qt::QueuedConnection);
 
-            connect(_qmlWindow, SIGNAL(resized(QSizeF)), this, SIGNAL(resized(QSizeF)), Qt::QueuedConnection);
-            connect(_qmlWindow, SIGNAL(moved(QVector2D)), this, SLOT(hasMoved(QVector2D)), Qt::QueuedConnection);
+            if (metaObject->indexOfSignal("resized") >= 0)
+                connect(_qmlWindow, SIGNAL(resized(QSizeF)), this, SIGNAL(resized(QSizeF)), Qt::QueuedConnection);
+            if (metaObject->indexOfSignal("moved") >= 0)
+                connect(_qmlWindow, SIGNAL(moved(QVector2D)), this, SLOT(hasMoved(QVector2D)), Qt::QueuedConnection);
             connect(_qmlWindow, SIGNAL(windowClosed()), this, SLOT(hasClosed()), Qt::QueuedConnection);
         });
     }
diff --git a/scripts/developer/debugging/debugWindow.qml b/scripts/developer/debugging/debugWindow.qml
index f046a949ef..20fa24358d 100644
--- a/scripts/developer/debugging/debugWindow.qml
+++ b/scripts/developer/debugging/debugWindow.qml
@@ -18,6 +18,9 @@ Rectangle {
     width: parent ? parent.width : 100
     height: parent ? parent.height : 100
 
+    signal moved(vector2d position);
+    signal resized(size size);
+
     property var channel;
 
     TextArea {