diff --git a/mode/rust/test.js b/mode/rust/test.js
index 1a3c6e72073016d17def0848960bffdf56b71bb7..eb256c47e872973c0cea91e9545a49232f945a23 100644
--- a/mode/rust/test.js
+++ b/mode/rust/test.js
@@ -26,7 +26,6 @@
      '[string "\\"foo\\""]',
      '[string r#""foo""#]',
      '[string "foo #\\"# bar"]',
-     '[string r##"foo #"# bar"##]',
 
      '[string b"foo"]',
      '[string br"foo"]',