diff --git a/js/tests/elementary_test.js b/js/tests/elementary_test.js
index e67daa11a0..58456bc1ad 100644
--- a/js/tests/elementary_test.js
+++ b/js/tests/elementary_test.js
@@ -1,4 +1,5 @@
 Math.imul = undefined
+eval = undefined
 // /*/ // ⚡
 export const tests = []
 const t = (f) => tests.push(f)
diff --git a/subjects/elementary/README.md b/subjects/elementary/README.md
index f5e8b498f2..1e836df7eb 100644
--- a/subjects/elementary/README.md
+++ b/subjects/elementary/README.md
@@ -14,4 +14,5 @@ Create 3 functions which each take `(a, b)` as arguments:
 
 ```js
 Math.imul = undefined
+eval = undefined
 ```