diff --git a/exercises/practice/protein-translation/protein-translation-test.red b/exercises/practice/protein-translation/protein-translation-test.red
index aa6fbc9..0766d80 100644
--- a/exercises/practice/protein-translation/protein-translation-test.red
+++ b/exercises/practice/protein-translation/protein-translation-test.red
@@ -13,7 +13,7 @@ canonical-cases: [#(
     input: #(
         strand: ""
     )
-    expected: [""]
+    expected: []
     function: "proteins"
     uuid: "2c44f7bf-ba20-43f7-a3bf-f2219c0c3f98"
 ) #(