diff --git a/src/ast/scopes/ModuleScope.js b/src/ast/scopes/ModuleScope.js
index f451d20..cdc2c93 100644
--- a/src/ast/scopes/ModuleScope.js
+++ b/src/ast/scopes/ModuleScope.js
@@ -19,14 +19,15 @@ export default class ModuleScope extends Scope {
 		forOwn( this.module.imports, specifier => {
 			if ( specifier.module.isExternal ) return;
 
-			if ( specifier.name === '*' ) {
-				specifier.module.getExports().forEach( name => {
-					names.set( name, true );
-				});
-			} else {
+			specifier.module.getExports().forEach( name => {
+				names.set(name);
+			});
+			if ( specifier.name !== '*' ) {
 				const declaration = specifier.module.traceExport( specifier.name );
 				const name = declaration.getName( true );
-				if ( name !== specifier.name ) names.set( declaration.getName( true ) );
+				if ( name !== specifier.name ) {
+					names.set(declaration.getName( true ));
+				}
 			}
 		});
 
diff --git a/test/function/namespacing-in-sub-functions/_config.js b/test/function/namespacing-in-sub-functions/_config.js
new file mode 100644
index 0000000..025b117
--- /dev/null
+++ b/test/function/namespacing-in-sub-functions/_config.js
@@ -0,0 +1,8 @@
+var assert = require( 'assert' );
+
+module.exports = {
+	description: 'correctly namespaces sub-functions (#910)',
+	exports: function ( exports ) {
+		assert.equal( exports, 'foobar' );
+	}
+};
diff --git a/test/function/namespacing-in-sub-functions/main.js b/test/function/namespacing-in-sub-functions/main.js
new file mode 100644
index 0000000..ac9d9da
--- /dev/null
+++ b/test/function/namespacing-in-sub-functions/main.js
@@ -0,0 +1,11 @@
+import { problematicFunc as otherFunc } from './problematicFunc';
+function innerFunc() {
+	function problematicFunc () {
+		return otherFunc();
+	}
+	return problematicFunc();
+}
+
+var res = innerFunc();
+
+export default res;
\ No newline at end of file
diff --git a/test/function/namespacing-in-sub-functions/problematicFunc.js b/test/function/namespacing-in-sub-functions/problematicFunc.js
new file mode 100644
index 0000000..1fbecc0
--- /dev/null
+++ b/test/function/namespacing-in-sub-functions/problematicFunc.js
@@ -0,0 +1,5 @@
+function problematicFunc() {
+	return 'foobar';
+}
+
+export { problematicFunc };
\ No newline at end of file