diff --git a/lib/6to5/types/index.js b/lib/6to5/types/index.js
index 3ed12a6e47..5db1a528d5 100644
--- a/lib/6to5/types/index.js
+++ b/lib/6to5/types/index.js
@@ -114,7 +114,9 @@ t.shallowEqual = function (actual, expected) {
 //
 
 t.isDynamic = function (node) {
-  if (t.isIdentifier(node) || t.isLiteral(node) || t.isThisExpression(node)) {
+  if (t.isParenthesizedExpression(node)) {
+    return t.isDynamic(node.expression);
+  } else if (t.isIdentifier(node) || t.isLiteral(node) || t.isThisExpression(node)) {
     return false;
   } else if (t.isMemberExpression(node)) {
     return t.isDynamic(node.object) || t.isDynamic(node.property);