diff --git a/ShortCSS.styl b/ShortCSS.styl
index 6152189..a03baa7 100644
--- a/ShortCSS.styl
+++ b/ShortCSS.styl
@@ -192,6 +192,8 @@ __units ?= 0px
   text-align arguments
 -to()
   text-overflow arguments
+-tt()
+  text-transform arguments
 
 //list
 -lis()