diff --git a/test/validator/samples/a11y-html-has-lang/input.html b/test/validator/samples/a11y-html-has-lang/input.html
index 0fa84d90a6..41f2fc6276 100644
--- a/test/validator/samples/a11y-html-has-lang/input.html
+++ b/test/validator/samples/a11y-html-has-lang/input.html
@@ -1,5 +1,5 @@
 <html lang="en"></html>
 <html lang="en-US"></html>
-<html lang={language}></html>
+<html lang={{language}}></html>
 
 <html></html>
