diff --git a/README.md b/README.md
index e91dcc9..52352ef 100644
--- a/README.md
+++ b/README.md
@@ -46,6 +46,7 @@ Ctrl + t : transpose the character before the cursor with the one under the curs
 Ctrl + w : cut the word before the cursor; then Ctrl + y paste it
 Ctrl + u : cut the line before the cursor; then Ctrl + y paste it
 Ctrl + x + Ctrl + e : launch editor define by $EDITOR
+Ctrl + _ : undo typing.
 ```
 ##### Change case
 ```bash