diff --git a/doc/go1.5.txt b/doc/go1.5.txt
index 307694f9ef..01226cfffd 100644
--- a/doc/go1.5.txt
+++ b/doc/go1.5.txt
@@ -1,2 +1,3 @@
+crypto/cipher: clarify what will happen if len(src) != len(dst) for the Stream interface. (https://golang.org/cl/1754)
 crypto/tls: change default minimum version to TLS 1.0. (https://golang.org/cl/1791)
 encoding/base64: add unpadded encodings (https://golang.org/cl/1511)