diff --git a/test/form/samples/namespace-optimization-computed-string/main.js b/test/form/samples/namespace-optimization-computed-string/main.js
index <HASH>..<HASH> 100644
--- a/test/form/samples/namespace-optimization-computed-string/main.js
+++ b/test/form/samples/namespace-optimization-computed-string/main.js
@@ -1,3 +1,4 @@
 import * as foo from './foo.js';
 
 foo['bar']['quux']['a']();
+foo['bar']['quux']['b']();
diff --git a/test/form/samples/namespace-optimization-computed-string/quux.js b/test/form/samples/namespace-optimization-computed-string/quux.js
index <HASH>..<HASH> 100644
--- a/test/form/samples/namespace-optimization-computed-string/quux.js
+++ b/test/form/samples/namespace-optimization-computed-string/quux.js
@@ -1,3 +1,5 @@
 export function a () {
 	console.log('effect');
 }
+
+export function b () {}
Improve test to show that tree-shaking now works with computed
namespace props.