diff --git a/YACReader/viewer.cpp b/YACReader/viewer.cpp
index bcf34b00..79a833d0 100644
--- a/YACReader/viewer.cpp
+++ b/YACReader/viewer.cpp
@@ -22,6 +22,8 @@
 
 #include <QFile>
 
+#include <QsLog.h>
+
 Viewer::Viewer(QWidget *parent)
     : QScrollArea(parent),
       fullscreen(false),
@@ -363,6 +365,8 @@ void Viewer::updateContentSize()
         // apply scaling
         content->resize(pagefit);
 
+        QLOG_INFO() << "Device pixel ratio used while rendering: " << devicePixelRatioF();
+
         // TODO: updtateContentSize should only scale the pixmap once
         if (devicePixelRatioF() > 1) // only in HDPI displays
         {