diff --git a/man/man1/notmuch-show.1 b/man/man1/notmuch-show.1
index a7f07928..03a99eac 100644
--- a/man/man1/notmuch-show.1
+++ b/man/man1/notmuch-show.1
@@ -130,7 +130,7 @@ Decrypt any MIME encrypted parts found in the selected content
 (ie. "multipart/encrypted" parts). Status of the decryption will be
 reported (currently only supported with --format=json) and the
 multipart/encrypted part will be replaced by the decrypted
-content.
+content.  Implies --verify.
 .RE
 
 .RS 4