diff --git a/test/runtime/samples/unchanged-expression-xss/_config.js b/test/runtime/samples/unchanged-expression-xss/_config.js
new file mode 100644
index 0000000000..fa5453dbf3
--- /dev/null
+++ b/test/runtime/samples/unchanged-expression-xss/_config.js
@@ -0,0 +1,3 @@
+export default {
+	html: `<p>&lt;b\nstyle='color:\nred;'&gt;RED?!?&lt;/b&gt;</p>`,
+};
diff --git a/test/runtime/samples/unchanged-expression-xss/main.svelte b/test/runtime/samples/unchanged-expression-xss/main.svelte
new file mode 100644
index 0000000000..c2003d07ae
--- /dev/null
+++ b/test/runtime/samples/unchanged-expression-xss/main.svelte
@@ -0,0 +1,5 @@
+<script>
+  const content = `<b style='color: red;'>RED?!?</b>`
+</script>
+
+<p>{content}</p>
\ No newline at end of file