diff --git a/src/babel/transformation/transformers/es6/block-scoping.js b/src/babel/transformation/transformers/es6/block-scoping.js
index 943f7716a0..39d43664d7 100644
--- a/src/babel/transformation/transformers/es6/block-scoping.js
+++ b/src/babel/transformation/transformers/es6/block-scoping.js
@@ -327,7 +327,7 @@ class BlockScoping {
       for (var name in outsideRefs) {
         var id = outsideRefs[name];
 
-        if (this.scope.hasGlobal(id.name)) {
+        if (this.scope.hasGlobal(id.name) || this.scope.parentHasBinding(id.name)) {
           delete outsideRefs[id.name];
           delete this.letReferences[id.name];
 
diff --git a/test/fixtures/transformation/es6-block-scoping/wrap-closure-shadow-variables/actual.js b/test/fixtures/transformation/es6-block-scoping/wrap-closure-shadow-variables/actual.js
new file mode 100644
index 0000000000..33af2765a9
--- /dev/null
+++ b/test/fixtures/transformation/es6-block-scoping/wrap-closure-shadow-variables/actual.js
@@ -0,0 +1,5 @@
+let a = 1;
+for (let a = 1; a < 100; a++) {
+  items.forEach(item => a);
+}
+console.log(a);
diff --git a/test/fixtures/transformation/es6-block-scoping/wrap-closure-shadow-variables/expected.js b/test/fixtures/transformation/es6-block-scoping/wrap-closure-shadow-variables/expected.js
new file mode 100644
index 0000000000..a2a9b24b01
--- /dev/null
+++ b/test/fixtures/transformation/es6-block-scoping/wrap-closure-shadow-variables/expected.js
@@ -0,0 +1,11 @@
+"use strict";
+
+var a = 1;
+for (var _a = 1; _a < 100; _a++) {
+  (function (_a) {
+    items.forEach(function (item) {
+      return _a;
+    });
+  })(_a);
+}
+console.log(a);