diff --git a/README.md b/README.md
index 30c7848..555fef5 100644
--- a/README.md
+++ b/README.md
@@ -104,7 +104,6 @@ Many reddit users have a 'subreddit' of their own in the form of a profile (not
 
 ##### `booleans`
 Some variables are booleans and indicate whether or not a property applies. When you use a boolean variable, you must configure a string of text that is only inserted in place of a boolean variable when the variable is true.
-* `$ext`: The extension of the medium. Must typically be included, but may be omitted for self (text) posts on Unix systems
 
 ##### `booleans`
 Some variables are booleans and indicate whether or not a property applies. When you use a boolean variable, you must configure a string of text that is only inserted in place of a boolean variable when the variable is true.