diff --git a/README.asciidoc b/README.asciidoc
index 7bf24e0..2c00126 100644
--- a/README.asciidoc
+++ b/README.asciidoc
@@ -76,7 +76,7 @@ Relaunch a shell, and you should be able to `ssh-add -K`.
 
 If you want to use an askpass program, you can simply modify the agent file by adding the following lines:
 
-[,plist]
+[,xml]
 ----
 <key>EnvironmentVariables</key>
 <dict>