diff --git a/runtime/doc/eval.txt b/runtime/doc/eval.txt
index 261b5ca..aa84494 100644
--- a/runtime/doc/eval.txt
+++ b/runtime/doc/eval.txt
@@ -4368,6 +4368,7 @@
 		highlight	highlight groups
 		history		:history suboptions
 		locale		locale names (as output of locale -a)
+		mapclear        buffer argument
 		mapping		mapping name
 		menu		menus
 		messages	|:messages| suboptions