diff --git a/src/parse-name.js b/src/parse-name.js
index a3c1562..a8844f0 100644
--- a/src/parse-name.js
+++ b/src/parse-name.js
@@ -51,7 +51,7 @@ export default function parseName(source) {
                 }
                 else if (/^(['"])([^\1]+)\1$/.test(propAccessorLiteral)) {
                     // for string literal
-                    result.push(propAccessorLiteral.slice(1, propAccessorLiteral.length - 1));
+                    result.push(propAccessorLiteral.slice(1, -1));
                 }
 
                 term = term.slice(propAccessorEnd + 1);