diff --git a/README.md b/README.md
index 2a49ac6..1fbaecb 100644
--- a/README.md
+++ b/README.md
@@ -23,7 +23,7 @@ QPixmap::loadFromData() functions. The zoom number is passed as ASCII string
 to the functions:
 ```cpp
 QPixmap pm;
-pm.loadFromData(tileData, QByteArray::number(zoom));
+pm.loadFromData(data, QByteArray::number(zoom));
 ```
 
 For a complete code sample see the [pbf2png](https://github.com/tumic0/pbf2png)
@@ -33,9 +33,10 @@ conversion utility.
 The plugin supports vector scaling using QImageReader's setScaledSize() method,
 so when used like in the following example:
 ```cpp
+QImage img;
 QImageReader reader(file, QByteArray::number(zoom));
 reader.setScaledSize(QSize(1024, 1024));
-reader.read(&image);
+reader.read(&img);
 ```
 you will get 1024x1024px tiles with a pixel ratio of 2 (= HiDPI tiles).
 
@@ -44,8 +45,8 @@ Since version 2.7 tile overzoom is supported. If you set *format* to
 `$zoom;$overzoom`:
 ```cpp
 QPixmap pm;
-pm.loadFromData(tileData, QByteArray::number(zoom) + ';' +
-                          QByteArray::number(overzoom));
+QByteArray fmt(QByteArray::number(zoom) + ';' + QByteArray::number(overzoom));
+pm.loadFromData(data, fmt);
 ```
 you will get (512<<overzoom)x(512<<overzoom)px tiles with a pixel ratio of 1.
 When overzoom is combined with setScaledSize(), the base size is the overzoomed