diff --git a/spec/fixtures/underscore.html b/spec/fixtures/underscore.html
new file mode 100644
index 0000000..78d0485
--- /dev/null
+++ b/spec/fixtures/underscore.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta http-equiv="Content-type" content="text/html; charset=utf-8"/>
+    <title>Test</title>
+  </head>
+  <body>
+    <p>Some unique text</p>
+    <script src="<%=htmlWebpackPlugin.files.chunks.app.entry%>"></script>
+  </body>
+</html>
