diff --git a/README.txt b/README.txt
index 177985b..116df0b 100644
--- a/README.txt
+++ b/README.txt
@@ -11,7 +11,10 @@ hello.txt -> compress -> encrypt -> .zip -> decrypt -> decompress -> hello.txt
 
 Roadmap
 ==============================================================================
-Reading - Working on it. Some bugs to work out (TODO: check for AE-2 and skip CRC).
+Reading - Working on it. Seems like the AES-CTR counter incrementer for WinZip
+encryption follows a little-endian, left-aligned counter whereas Go's AES-CTR
+implementation is big-endian, right-aligned counter. Will have to read block by
+block and increment the counter by hand.
 Writing - Not started.
 Testing - Needs more.