diff --git a/lib/6to5/transformation/transformers/destructuring.js b/lib/6to5/transformation/transformers/destructuring.js
index 19ecf3db31..8522df8b1b 100644
--- a/lib/6to5/transformation/transformers/destructuring.js
+++ b/lib/6to5/transformation/transformers/destructuring.js
@@ -11,7 +11,7 @@ var buildVariableAssign = function (kind, id, init) {
   }
 };
 
-var get = function (node) {
+var normalise = function (node) {
   if (t.isParenthesizedExpression(node)) {
     return node.expression;
   } else {
@@ -19,8 +19,12 @@ var get = function (node) {
   }
 };
 
+var isPattern = function (node) {
+  return t.isPattern(normalise(node));
+};
+
 var push = function (kind, nodes, elem, parentId) {
-  elem = get(elem);
+  elem = normalise(elem);
 
   if (t.isObjectPattern(elem)) {
     pushObjectPattern(kind, nodes, elem, parentId);
@@ -35,10 +39,10 @@ var push = function (kind, nodes, elem, parentId) {
 
 var pushObjectPattern = function (kind, nodes, pattern, parentId) {
   _.each(pattern.properties, function (prop) {
-    var pattern2   = get(prop.value);
+    var pattern2   = prop.value;
     var patternId2 = t.memberExpression(parentId, prop.key);
 
-    if (t.isPattern(pattern2)) {
+    if (isPattern(pattern2)) {
       push(kind, nodes, pattern2, patternId2);
     } else {
       nodes.push(buildVariableAssign(kind, pattern2, patternId2));
@@ -89,8 +93,8 @@ exports.ForOfStatement = function (node, parent, file, scope) {
   var declar = node.left;
   if (!t.isVariableDeclaration(declar)) return;
 
-  var pattern = get(declar.declarations[0].id);
-  if (!t.isPattern(pattern)) return;
+  var pattern = declar.declarations[0].id;
+  if (!isPattern(pattern)) return;
 
   var key = t.identifier(file.generateUid("ref", scope));
   node.left = t.variableDeclaration(declar.kind, [
@@ -113,7 +117,7 @@ exports.Function = function (node, parent, file, scope) {
   var hasDestructuring = false;
 
   node.params = node.params.map(function (pattern) {
-    if (!t.isPattern(get(pattern))) return pattern;
+    if (!isPattern(pattern)) return pattern;
 
     hasDestructuring = true;
     var parentId = t.identifier(file.generateUid("ref", scope));
@@ -142,8 +146,7 @@ exports.ExpressionStatement = function (node, parent, file, scope) {
   var expr = node.expression;
   if (expr.type !== "AssignmentExpression") return;
 
-  var left = get(expr.left);
-  if (!t.isPattern(left)) return;
+  if (!isPattern(expr.left)) return;
 
   var nodes = [];
 
@@ -152,7 +155,7 @@ exports.ExpressionStatement = function (node, parent, file, scope) {
     t.variableDeclarator(ref, expr.right)
   ]));
 
-  push(false, nodes, left, ref);
+  push(false, nodes, expr.left, ref);
 
   return nodes;
 };
@@ -164,7 +167,7 @@ exports.VariableDeclaration = function (node, parent, file, scope) {
 
   var hasPattern = false;
   _.each(node.declarations, function (declar) {
-    if (t.isPattern(get(declar.id))) {
+    if (isPattern(declar.id)) {
       hasPattern = true;
       return false;
     }
@@ -173,7 +176,7 @@ exports.VariableDeclaration = function (node, parent, file, scope) {
 
   _.each(node.declarations, function (declar) {
     var patternId = declar.init;
-    var pattern   = get(declar.id);
+    var pattern   = declar.id;
     if (t.isPattern(pattern) && patternId) {
       pushPattern({
         kind:    node.kind,