diff --git a/README.md b/README.md
index c5b6e27..5fca5cc 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Grav Pages as Data
 
-The **Grav Pages as Data** for [Grav](http://github.com/getgrav/grav) provides a very basic way for APIs to return data from grav as json xml or yml.
+The **Grav Pages as Data** for [Grav](http://github.com/getgrav/grav) provides a very basic way for APIs to return data from grav as json xml or yaml.
 
 # Installation
 
@@ -11,4 +11,4 @@ Download and unpack a zip (or clone this repository) into the user/plugins direc
 Try to load any page in Grav then add one of the following:
 `?return-as=json`
 `?return-as=xml`
-`?return-as=yml`
\ No newline at end of file
+`?return-as=yaml`