diff --git a/src/ImageViewer.qml b/src/ImageViewer.qml
index 39ad527..238e72c 100644
--- a/src/ImageViewer.qml
+++ b/src/ImageViewer.qml
@@ -166,7 +166,7 @@ SilicaFlickable {
             smooth: !(flickable.movingVertically || flickable.movingHorizontally)
             width: Math.ceil(implicitWidth * flickable._scale)
             height: Math.ceil(implicitHeight * flickable._scale)
-            sourceSize.width: Screen.height
+            sourceSize.width: Math.min(500, Screen.height)
             fillMode:  Image.PreserveAspectFit
             asynchronous: true
             anchors.centerIn: parent