diff --git a/src/Bundle.js b/src/Bundle.js
index fa53ae6..63d6b79 100644
--- a/src/Bundle.js
+++ b/src/Bundle.js
@@ -127,6 +127,13 @@ export default class Bundle {
 
 		this.externalModules.forEach( module => {
 			module.name = getSafeName( module.name );
+
+			// ensure we don't shadow named external imports, if
+			// we're creating an ES6 bundle
+			keys( module.declarations ).forEach( name => {
+				const declaration = module.declarations[ name ];
+				declaration.setSafeName( getSafeName( name ) );
+			});
 		});
 
 		this.modules.forEach( module => {
diff --git a/src/Declaration.js b/src/Declaration.js
index 831a966..6710ff5 100644
--- a/src/Declaration.js
+++ b/src/Declaration.js
@@ -221,6 +221,8 @@ export class ExternalDeclaration {
 		this.module = module;
 		this.name = name;
 		this.isExternal = true;
+
+		this.safeName = null;
 	}
 
 	addAlias () {
@@ -246,13 +248,17 @@ export class ExternalDeclaration {
 				this.module.name;
 		}
 
-		return es6 ? this.name : `${this.module.name}.${this.name}`;
+		return es6 ? this.safeName : `${this.module.name}.${this.name}`;
 	}
 
 	run () {
 		return true;
 	}
 
+	setSafeName ( name ) {
+		this.safeName = name;
+	}
+
 	use () {
 		// noop?
 	}
diff --git a/test/form/external-import-alias-shadow/_expected/amd.js b/test/form/external-import-alias-shadow/_expected/amd.js
index ca4d1a5..b60b8be 100644
--- a/test/form/external-import-alias-shadow/_expected/amd.js
+++ b/test/form/external-import-alias-shadow/_expected/amd.js
@@ -1,9 +1,9 @@
 define(['acorn'], function (acorn) { 'use strict';
 
-	function parse(source) {
+	function parse$1(source) {
 		return acorn.parse(source, { ecmaVersion: 6 });
 	}
 
-	console.log(parse('foo'));
+	console.log(parse$1('foo'));
 
-});
\ No newline at end of file
+});
diff --git a/test/form/external-import-alias-shadow/_expected/cjs.js b/test/form/external-import-alias-shadow/_expected/cjs.js
index 60ff081..26f9991 100644
--- a/test/form/external-import-alias-shadow/_expected/cjs.js
+++ b/test/form/external-import-alias-shadow/_expected/cjs.js
@@ -2,8 +2,8 @@
 
 var acorn = require('acorn');
 
-function parse(source) {
+function parse$1(source) {
 	return acorn.parse(source, { ecmaVersion: 6 });
 }
 
-console.log(parse('foo'));
\ No newline at end of file
+console.log(parse$1('foo'));
diff --git a/test/form/external-import-alias-shadow/_expected/es6.js b/test/form/external-import-alias-shadow/_expected/es6.js
index bdb3b4b..2750231 100644
--- a/test/form/external-import-alias-shadow/_expected/es6.js
+++ b/test/form/external-import-alias-shadow/_expected/es6.js
@@ -1,7 +1,7 @@
 import { parse } from 'acorn';
 
-function parse$$(source) {
+function parse$1(source) {
 	return parse(source, { ecmaVersion: 6 });
 }
 
-console.log(parse$$('foo'));
\ No newline at end of file
+console.log(parse$1('foo'));
diff --git a/test/form/external-import-alias-shadow/_expected/iife.js b/test/form/external-import-alias-shadow/_expected/iife.js
index e296ac0..fea2c7e 100644
--- a/test/form/external-import-alias-shadow/_expected/iife.js
+++ b/test/form/external-import-alias-shadow/_expected/iife.js
@@ -1,10 +1,10 @@
 (function (acorn) {
 	'use strict';
 
-	function parse(source) {
+	function parse$1(source) {
 		return acorn.parse(source, { ecmaVersion: 6 });
 	}
 
-	console.log(parse('foo'));
+	console.log(parse$1('foo'));
 
-}(acorn));
\ No newline at end of file
+}(acorn));
diff --git a/test/form/external-import-alias-shadow/_expected/umd.js b/test/form/external-import-alias-shadow/_expected/umd.js
index 90827c6..7be513d 100644
--- a/test/form/external-import-alias-shadow/_expected/umd.js
+++ b/test/form/external-import-alias-shadow/_expected/umd.js
@@ -4,10 +4,10 @@
 	(factory(global.acorn));
 }(this, function (acorn) { 'use strict';
 
-	function parse(source) {
+	function parse$1(source) {
 		return acorn.parse(source, { ecmaVersion: 6 });
 	}
 
-	console.log(parse('foo'));
+	console.log(parse$1('foo'));
 
-}));
\ No newline at end of file
+}));