diff --git a/runtime/doc/builtin.txt b/runtime/doc/builtin.txt
index d60d61f..1837661 100644
--- a/runtime/doc/builtin.txt
+++ b/runtime/doc/builtin.txt
@@ -1,4 +1,4 @@
-*builtin.txt*	For Vim version 9.1.  Last change: 2025 Jan 16
+*builtin.txt*	For Vim version 9.1.  Last change: 2025 Jan 17
 
 
 		  VIM REFERENCE MANUAL	  by Bram Moolenaar
@@ -72,7 +72,7 @@
 bindtextdomain({package}, {path})
 				Bool	bind text domain to specified path
 blob2list({blob})		List	convert {blob} into a list of numbers
-blob2str({blob} [, {options}])	String	convert {blob} into a list of strings
+blob2str({blob} [, {options}])	List	convert {blob} into a list of strings
 browse({save}, {title}, {initdir}, {default})
 				String	put up a file requester
 browsedir({title}, {initdir})	String	put up a directory requester