diff --git a/Documentation/gitremote-helpers.adoc b/Documentation/gitremote-helpers.adoc
index 39cdece16e..10921e91b9 100644
--- a/Documentation/gitremote-helpers.adoc
+++ b/Documentation/gitremote-helpers.adoc
@@ -523,7 +523,7 @@ set by Git if the remote helper has the 'option' capability.
 'option update-shallow' {'true'|'false'}::
 	Allow to extend .git/shallow if the new refs require it.
 
-'option pushcert' {'true'|'false'}::
+'option pushcert' {'true'|'false'|'if-asked'}::
 	GPG sign pushes.
 
 'option push-option' <string>::