diff --git a/tests/baselines/reference/readonlyArraysAndTuples2.js b/tests/baselines/reference/readonlyArraysAndTuples2.js
index 2e05a0ece80..77e0b1add49 100644
--- a/tests/baselines/reference/readonlyArraysAndTuples2.js
+++ b/tests/baselines/reference/readonlyArraysAndTuples2.js
@@ -37,11 +37,11 @@ var A = /** @class */ (function () {
     }
     __decorate([
         someDec,
-        __metadata("design:type", Object)
+        __metadata("design:type", Array)
     ], A.prototype, "j");
     __decorate([
         someDec,
-        __metadata("design:type", Object)
+        __metadata("design:type", Array)
     ], A.prototype, "k");
     return A;
 }());