diff --git a/src/main/java/de/tudresden/inf/mci/brailleplot/rendering/BrailleText.java b/src/main/java/de/tudresden/inf/mci/brailleplot/rendering/BrailleText.java
index b82855dc03032a8e2e1fb7f1b257bb969a159e3a..c7ad2328788574b33d86b903df0c6561b9444e63 100644
--- a/src/main/java/de/tudresden/inf/mci/brailleplot/rendering/BrailleText.java
+++ b/src/main/java/de/tudresden/inf/mci/brailleplot/rendering/BrailleText.java
@@ -17,7 +17,7 @@ public class BrailleText implements Renderable {
     /**
      * Constructor. Creates a braille text field.
      * @param content The actual text of the text field.
-     * @param area The desired area for the text to be rendered on.
+     * @param area The desired area for the text to be rendered on. This must be a Dot Rectangle.
      */
     public BrailleText(final String content, final Rectangle area) {
         setText(content);