diff --git a/src/engines/libjs.js b/src/engines/libjs.js
index 8971f35..e2babd9 100644
--- a/src/engines/libjs.js
+++ b/src/engines/libjs.js
@@ -62,14 +62,13 @@ class LibJSInstaller extends Installer {
   }
 
   async install() {
-    await this.registerAssets('lib/**');
     const js = await this.registerAsset('bin/js');
-    this.binPath = await this.registerScript('ladybird-js', `"${js}"`);
+    this.binPath = await this.registerScript('ladybird-js', `"${js} --disable-string-quotes"`);
   }
 
   async test() {
-    const program = 'console.log("42")';
-    const output = '"42"';
+    const program = 'print("42")';
+    const output = '42';
 
     assert.strictEqual(
       (await execa(this.binPath, ['-c', program])).stdout,