diff --git a/super-tiny-compiler.js b/super-tiny-compiler.js
index e37f1a4..953b83d 100644
--- a/super-tiny-compiler.js
+++ b/super-tiny-compiler.js
@@ -446,7 +446,7 @@ function tokenizer(input) {
     //    ^^^
     //    Name token
     //
-    var LETTERS = /[a-zA-Z]/;
+    var LETTERS = /[a-z]i/;
     if (LETTERS.test(char)) {
       var value = '';