diff --git a/README.md b/README.md
--- a/README.md
+++ b/README.md
@@ -55,6 +55,10 @@ When you're done testing your reactions,
 
 If you are running on a multi-screen system, or a very high-resolution screen, you may find that Desert Paint Lab is rather slow in determining paint reactions.  That's because you have a lot of screen real-estate to scan, to look for the Pigment Lab dialog.  You can speed up the scanning process by ensuring that your Pigment Lab Dialog is as far to the upper-left of the screen as possible.
 
+### Retina / High-Density Screens
+
+High DPI screens may be displaying the game at something other than a 1:1 game-pixel to screen-pixel ratio.  These screens didn't exist, back when Desert Paint Lab was created.  A fix for this will be coming, soon.
+
 ## For Developers
 
 This application was developed using [MonoDevelop](http://www.monodevelop.com/), using the [Stetic GTK UI designer](http://www.monodevelop.com/documentation/stetic-gui-designer/).
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