diff --git a/lib/scope.js b/lib/scope.js
index 55d7c4e9..068daa60 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -96,7 +96,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
     var scope = self.parent_scope = null;
     var defun = null;
     var nesting = 0;
-    var object_destructuring_arg = false;
+    var in_destructuring = null;
     var tw = new TreeWalker(function(node, descend){
         if (options.screw_ie8 && node instanceof AST_Catch) {
             var save_scope = scope;
@@ -108,9 +108,9 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             return true;
         }
         if (node instanceof AST_Destructuring && node.is_array === false) {
-            object_destructuring_arg = true;  // These don't nest
+            in_destructuring = node;  // These don't nest
             descend();
-            object_destructuring_arg = false;
+            in_destructuring = null;
             return true;
         }
         if (node instanceof AST_Scope) {
@@ -137,7 +137,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
             node.scope = scope;
         }
         if (node instanceof AST_SymbolFunarg) {
-            node.object_destructuring_arg = object_destructuring_arg;
+            node.object_destructuring_arg = !!in_destructuring;
             defun.def_variable(node);
         }
         if (node instanceof AST_SymbolLambda) {
@@ -155,6 +155,7 @@ AST_Toplevel.DEFMETHOD("figure_out_scope", function(options){
                  || node instanceof AST_SymbolConst) {
             var def = defun.def_variable(node);
             def.constant = node instanceof AST_SymbolConst;
+            def.destructuring = in_destructuring;
             def.init = tw.parent().value;
         }
         else if (node instanceof AST_SymbolCatch) {
@@ -412,7 +413,10 @@ AST_Toplevel.DEFMETHOD("mangle_names", function(options){
         }
     });
     this.walk(tw);
-    to_mangle.forEach(function(def){ def.mangle(options) });
+    to_mangle.forEach(function(def){
+        if (def.destructuring && !def.destructuring.is_array) return;
+        def.mangle(options);
+    });
 
     if (options.cache) {
         options.cache.cname = this.cname;