diff --git a/doc/vi_diff.jax b/doc/vi_diff.jax
index 8150ab50b..c93129d57 100644
--- a/doc/vi_diff.jax
+++ b/doc/vi_diff.jax
@@ -342,6 +342,7 @@ Vi との互換性						|'compatible'|
 	|i_CTRL-X_CTRL-D|	マクロ定義
 	|i_CTRL-X_CTRL-O|	オムニ補完: ファイルタイプなどに特化した
 				賢い補完
+	|i_CTRL-X_CTRL-R|	レジスタからの単語
 
 長い行のサポート					|'wrap'| |'linebreak'|
 	'wrap' オプションがオフであれば、長い行は折り返されずに行の一部分だけが
diff --git a/en/vi_diff.txt b/en/vi_diff.txt
index 46db57a45..ae14968bb 100644
--- a/en/vi_diff.txt
+++ b/en/vi_diff.txt
@@ -338,6 +338,7 @@ Insert-mode completion.					|ins-completion|
 	|i_CTRL-X_CTRL-D|	definitions or macros
 	|i_CTRL-X_CTRL-O|	Omni completion: clever completion
 				specifically for a file type
+	|i_CTRL-X_CTRL-R|	words from registers
 	etc.
 
 Long line support.					|'wrap'| |'linebreak'|