diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index cef9bd5..cd9d7bd 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -1677,7 +1677,7 @@
 			feature is included}
 	This option is a list of comma-separated names.
 	Note: if one of the items is "exclude:", then you can't add an item
-	after that.  Therefore do append an item with += but use ^= to
+	after that.  Therefore do not append an item with += but use ^= to
 	prepend, e.g.: >
 		set clipboard^=unnamed
 <	These names are recognized: