--- a/flys-artifacts/src/main/java/de/intevation/flys/exports/ChartGenerator.java	Tue Dec 27 10:12:14 2011 +0000
+++ b/flys-artifacts/src/main/java/de/intevation/flys/exports/ChartGenerator.java	Tue Dec 27 11:19:44 2011 +0000
@@ -233,8 +233,8 @@
      * Returns the size of a chart export as array which has been specified by
      * the incoming request document.
      *
-     * @return the size of a chart as [width, height] or the result of
-     * getDefaultSize() if no width or height are given in the request document.
+     * @return the size of a chart as [width, height] or null if no width or
+     * height are given in the request document.
      */
     protected int[] getSize() {
         int[] size = new int[2];
@@ -262,7 +262,7 @@
             }
         }
 
-        return size[0] > 0 && size[1] > 0 ? size : getDefaultSize();
+        return size[0] > 0 && size[1] > 0 ? size : null;
     }