diff --git a/safe-io.rkt b/safe-io.rkt
index e84f34f..2797c1a 100644
--- a/safe-io.rkt
+++ b/safe-io.rkt
@@ -2,7 +2,8 @@
 
 (provide read-line-limited)
 
-;; Uses Internet (CRLF) convention.
+;; Uses Internet (CRLF) convention. Limit does not cover the CRLF
+;; bytes.
 (define (read-line-limited port limit)
   (let collect-chars ((acc '())
 		      (remaining limit))