diff --git a/glossary/glossary.txt b/glossary/glossary.txt
index 91b138b..08774fb 100644
--- a/glossary/glossary.txt
+++ b/glossary/glossary.txt
@@ -236,3 +236,4 @@ as follows	comme suit	Expression ayant un équivalent
 committing	validation
 {File Locks}	{Verrouillages de fichier}
 {Time of Day}	{Fuseau horaire}
+{Undo}	{Annulation}