diff --git a/README.txt b/README.txt
index 8c00333..288d244 100644
--- a/README.txt
+++ b/README.txt
@@ -65,3 +65,7 @@ you don't want anonymous users to be able to edit pages, go to
 'administer > users > access control'
 
 
+LIMITATIONS
+-----------------------------------------------------------------------------------------
+The 6.x version of COD doesn't support "Cash on Delivery" payment. There are often
+problems with offsite payment such as "hosted order pages."
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