diff --git a/fx.js b/fx.js
index e7d682a..0bcf824 100644
--- a/fx.js
+++ b/fx.js
@@ -79,7 +79,7 @@ module.exports = function start(filename, source) {
       // Autocomplete selected
       let code = input.getValue()
       let replace = autocomplete.getSelected()
-      if (/^[a-z]\w+$/.test(replace)) {
+      if (/^[a-z]\w*$/.test(replace)) {
         replace = '.' + replace
       } else {
         replace = `["${replace}"]`