diff --git a/collects/at-exp/lang/reader.ss b/collects/at-exp/lang/reader.ss
index 71ea0b2453..751e8b56b8 100644
--- a/collects/at-exp/lang/reader.ss
+++ b/collects/at-exp/lang/reader.ss
@@ -1,5 +1,7 @@
 #lang scheme/base
 
+;; FIXME: This code was largely cut-and-pasted from the planet reader. 
+
 (require syntax/readerr
          (only-in scribble/reader make-at-readtable))