diff --git a/src/lib/es5.d.ts b/src/lib/es5.d.ts
index 63b60f534af..3ad6046c85e 100644
--- a/src/lib/es5.d.ts
+++ b/src/lib/es5.d.ts
@@ -186,7 +186,7 @@ interface ObjectConstructor {
       * Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
       * @param o Object on which to lock the attributes.
       */
-    freeze<T, U>(f: (...args: T[]) => U): (...args: T[]) => U;
+    freeze<T>(f: (...args: any[]) => T): (...args: any[]) => T;
 
     /**
       * Prevents the modification of existing property attributes and values, and prevents the addition of new properties.
diff --git a/tests/baselines/reference/objectFreeze.errors.txt b/tests/baselines/reference/objectFreeze.errors.txt
index e820520ed8a..0a1a0518829 100644
--- a/tests/baselines/reference/objectFreeze.errors.txt
+++ b/tests/baselines/reference/objectFreeze.errors.txt
@@ -1,15 +1,18 @@
-tests/cases/compiler/objectFreeze.ts(5,24): error TS2345: Argument of type '123' is not assignable to parameter of type 'string'.
-tests/cases/compiler/objectFreeze.ts(6,2): error TS1128: Declaration or statement expected.
+tests/cases/compiler/objectFreeze.ts(5,1): error TS2542: Index signature in type 'ReadonlyArray<number>' only permits reading.
+tests/cases/compiler/objectFreeze.ts(8,3): error TS2540: Cannot assign to 'b' because it is a constant or a read-only property.
 
 
 ==== tests/cases/compiler/objectFreeze.ts (2 errors) ====
-    class A {
-        constructor(public a1: string) {
-        }
-    }
-    function foo(x = new A(123)) { //should error, 123 is not string
-                           ~~~
-!!! error TS2345: Argument of type '123' is not assignable to parameter of type 'string'.
-    }}
-     ~
-!!! error TS1128: Declaration or statement expected.
\ No newline at end of file
+    const f = Object.freeze(function foo(a: number, b: string) { return false; });
+    f(1, "") === false;
+    
+    const a = Object.freeze([1, 2, 3]);
+    a[0] = 1;
+    ~~~~
+!!! error TS2542: Index signature in type 'ReadonlyArray<number>' only permits reading.
+    
+    const o = Object.freeze({ a: 1, b: "string" });
+    o.b = "another";
+      ~
+!!! error TS2540: Cannot assign to 'b' because it is a constant or a read-only property.
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/objectFreeze.js b/tests/baselines/reference/objectFreeze.js
index 86c2833dabf..51308c8e07c 100644
--- a/tests/baselines/reference/objectFreeze.js
+++ b/tests/baselines/reference/objectFreeze.js
@@ -1,18 +1,18 @@
 //// [objectFreeze.ts]
-class A {
-    constructor(public a1: string) {
-    }
-}
-function foo(x = new A(123)) { //should error, 123 is not string
-}}
+const f = Object.freeze(function foo(a: number, b: string) { return false; });
+f(1, "") === false;
+
+const a = Object.freeze([1, 2, 3]);
+a[0] = 1;
+
+const o = Object.freeze({ a: 1, b: "string" });
+o.b = "another";
+
 
 //// [objectFreeze.js]
-var A = (function () {
-    function A(a1) {
-        this.a1 = a1;
-    }
-    return A;
-}());
-function foo(x) {
-    if (x === void 0) { x = new A(123); }
-}
+var f = Object.freeze(function foo(a, b) { return false; });
+f(1, "") === false;
+var a = Object.freeze([1, 2, 3]);
+a[0] = 1;
+var o = Object.freeze({ a: 1, b: "string" });
+o.b = "another";
diff --git a/tests/cases/compiler/objectFreeze.ts b/tests/cases/compiler/objectFreeze.ts
index e92f9ecd00e..2c93fc8f075 100644
--- a/tests/cases/compiler/objectFreeze.ts
+++ b/tests/cases/compiler/objectFreeze.ts
@@ -1,6 +1,8 @@
-class A {
-    constructor(public a1: string) {
-    }
-}
-function foo(x = new A(123)) { //should error, 123 is not string
-}}
\ No newline at end of file
+const f = Object.freeze(function foo(a: number, b: string) { return false; });
+f(1, "") === false;
+
+const a = Object.freeze([1, 2, 3]);
+a[0] = 1;
+
+const o = Object.freeze({ a: 1, b: "string" });
+o.b = "another";