diff --git a/ii-doc.txt b/ii-doc.txt
index 197cd84..07eb7db 100644
--- a/ii-doc.txt
+++ b/ii-doc.txt
@@ -86,7 +86,7 @@ Response: in case of success, must start with "msg ok"
 where base64_msgtext is the Base64URL-encoded Point-to-Node Message.
 The maximum length of the tmsg field must be 87382 bytes.
 
-Note: the Base64URL encoding means that after the standard base64 encoding,
+Note: the Base64URL encoding means that after the standard Base64 encoding,
 the + character is replaced with -, the / character is replaced with _, and
 the = character is omitted from the end.