diff --git a/lib/internal/test_runner/snapshot.js b/lib/internal/test_runner/snapshot.js
index ff3e3c8d0e6ee6..158ec1d44216cd 100644
--- a/lib/internal/test_runner/snapshot.js
+++ b/lib/internal/test_runner/snapshot.js
@@ -9,6 +9,7 @@ const {
   SafeMap,
   String,
   StringPrototypeReplaceAll,
+  StringPrototypeSlice,
 } = primordials;
 const {
   codes: {
@@ -291,7 +292,7 @@ function validateFunctionArray(fns, name) {
 }
 
 function escapeSnapshotKey(str) {
-  let result = JSONStringify(str, null, 2).slice(1, -1);
+  let result = StringPrototypeSlice(JSONStringify(str, null, 2), 1, -1);
   result = StringPrototypeReplaceAll(result, '`', '\\`');
   result = StringPrototypeReplaceAll(result, '${', '\\${');
   return result;