diff --git a/README b/README
index 8aa30757a89..a310865b0d0 100644
--- a/README
+++ b/README
@@ -48,6 +48,11 @@ FTGL needs a small patch to get glyphs with the right colour in the cache
 +        ftglColour[0] = ftglColour[1] = ftglColour[2] = ftglColour[3] = 1.0;
 
 
+You may also need to modify the typedef for GLUTesselatorFunction in 
+src/FTVectoriser.cpp if your on an undefined system.  To do that
+check the following link to find out various platform identifiers.
+http://www.blender.org/modules/documentation/intranet/conventions/codingstyleguide.html#3_2
+
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 We are in the process of moving things over to automake/autoconf