diff --git a/src/babel/transformation/modules/_default.js b/src/babel/transformation/modules/_default.js
index 592890887c..2d36ccb78f 100644
--- a/src/babel/transformation/modules/_default.js
+++ b/src/babel/transformation/modules/_default.js
@@ -106,12 +106,12 @@ var exportsVisitor = traverse.explode({
 
 export default class DefaultFormatter {
   constructor(file) {
-    this.internalRemap = {};
 
     this.defaultIds = object();
     this.scope      = file.scope;
     this.file       = file;
     this.ids        = object();
+    this.internalRemap = object();
 
     this.hasNonDefaultExports = false;
 
diff --git a/test/core/fixtures/transformation/misc/regression-lodash-tostring-import/actual.js b/test/core/fixtures/transformation/misc/regression-lodash-tostring-import/actual.js
new file mode 100644
index 0000000000..9fa4842a8e
--- /dev/null
+++ b/test/core/fixtures/transformation/misc/regression-lodash-tostring-import/actual.js
@@ -0,0 +1,2 @@
+import toString from "foo";
+toString;
diff --git a/test/core/fixtures/transformation/misc/regression-lodash-tostring-import/expected.js b/test/core/fixtures/transformation/misc/regression-lodash-tostring-import/expected.js
new file mode 100644
index 0000000000..935f40aa45
--- /dev/null
+++ b/test/core/fixtures/transformation/misc/regression-lodash-tostring-import/expected.js
@@ -0,0 +1,9 @@
+"use strict";
+
+var _interopRequire = function (obj) { return obj && obj.__esModule ? obj["default"] : obj; };
+
+var _toString = require("foo");
+
+var toString = _interopRequire(_toString);
+
+toString;