diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index da0ef5b..c07549d 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -2054,8 +2054,10 @@
 			local to buffer
 			{not in Vi}
 	Method used for encryption when the buffer is written to a file:
+							*pkzip*
 		0	PkZip compatible method.  A weak kind of encryption.
 			backwards compatible with Vim 7.2 and older.
+							*blowfish*
 		1	Blowfish method.  Strong encryption.  Not compatible
 			with Vim 7.2 and older.
 	When reading an encrypted file 'cryptmethod' will be set automatically