diff --git a/nettle.texinfo b/nettle.texinfo
index 071bbb6df6813703f6a772b65f45c3f31f0508fd..23ed6fea1dd78a4d62a8c5610413dc099bed5610 100644
--- a/nettle.texinfo
+++ b/nettle.texinfo
@@ -1943,7 +1943,7 @@ each message.
 Additional authenticated data, which is to be included in the message
 authentication, but not encrypted. May be empty.
 @item
-The plaintext. Maybe empty.
+The plaintext. May be empty.
 @end itemize
 
 The outputs are a ciphertext, of the same length as the plaintext, and a