diff --git a/modules/angular2/src/core/forms/model.ts b/modules/angular2/src/core/forms/model.ts
index 8dcef80501..9b6c11baaa 100644
--- a/modules/angular2/src/core/forms/model.ts
+++ b/modules/angular2/src/core/forms/model.ts
@@ -321,7 +321,15 @@ export class ControlGroup extends AbstractControl {
   _updateValue() { this._value = this._reduceValue(); }
 
   /** @internal */
-  _calculateControlsErrors() { return Validators.group(this); }
+  _calculateControlsErrors() {
+    var res = {};
+    StringMapWrapper.forEach(this.controls, (control, name) => {
+      if (this.contains(name) && isPresent(control.errors)) {
+        res[name] = control.errors;
+      }
+    });
+    return StringMapWrapper.isEmpty(res) ? null : res;
+  }
 
   /** @internal */
   _reduceValue() {
@@ -420,10 +428,20 @@ export class ControlArray extends AbstractControl {
   _updateValue(): void { this._value = this.controls.map((control) => control.value); }
 
   /** @internal */
-  _calculateControlsErrors() { return Validators.array(this); }
+  _calculateControlsErrors() {
+    var res = [];
+    var anyErrors = false;
+    this.controls.forEach((control) => {
+      res.push(control.errors);
+      if (isPresent(control.errors)) {
+        anyErrors = true;
+      }
+    });
+    return anyErrors ? res : null;
+  }
 
   /** @internal */
   _setParentForControls(): void {
     this.controls.forEach((control) => { control.setParent(this); });
   }
-}
+}
\ No newline at end of file
diff --git a/modules/angular2/src/core/forms/validators.ts b/modules/angular2/src/core/forms/validators.ts
index 2f4a1a5c1a..d93735fc6c 100644
--- a/modules/angular2/src/core/forms/validators.ts
+++ b/modules/angular2/src/core/forms/validators.ts
@@ -54,26 +54,4 @@ export class Validators {
       return StringMapWrapper.isEmpty(res) ? null : res;
     };
   }
-
-  static group(group: modelModule.ControlGroup): {[key: string]: any} {
-    var res: {[key: string]: any[]} = {};
-    StringMapWrapper.forEach(group.controls, (control, name) => {
-      if (group.contains(name) && isPresent(control.errors)) {
-        res[name] = control.errors;
-      }
-    });
-    return StringMapWrapper.isEmpty(res) ? null : res;
-  }
-
-  static array(array: modelModule.ControlArray): any[] {
-    var res: any[] = [];
-    var anyErrors: boolean = false;
-    array.controls.forEach((control) => {
-      res.push(control.errors);
-      if (isPresent(control.errors)) {
-        anyErrors = true;
-      }
-    });
-    return anyErrors ? res : null;
-  }
 }
diff --git a/modules/angular2/test/core/forms/model_spec.ts b/modules/angular2/test/core/forms/model_spec.ts
index 1e5cd52f67..810f305446 100644
--- a/modules/angular2/test/core/forms/model_spec.ts
+++ b/modules/angular2/test/core/forms/model_spec.ts
@@ -193,7 +193,7 @@ export function main() {
           expect(g.errors).toEqual({"someGroupError": true});
         });
 
-        it("update a value should reset errosr", () => {
+        it("should reset errors when updating a value", () => {
           var c = new Control("oldValue");
           var g = new ControlGroup({"one": c});
 
@@ -232,14 +232,14 @@ export function main() {
       });
 
       describe("controlsErrors", () => {
-        it("should run the validator with the initial value (valid)", () => {
+        it("should be null when no errors", () => {
           var g = new ControlGroup({"one": new Control('value', Validators.required)});
 
           expect(g.valid).toEqual(true);
           expect(g.controlsErrors).toEqual(null);
         });
 
-        it("should run the validator with the initial value (invalid)", () => {
+        it("should collect errors from the child controls", () => {
           var one = new Control(null, Validators.required);
           var g = new ControlGroup({"one": one});
 
@@ -247,6 +247,14 @@ export function main() {
           expect(g.controlsErrors).toEqual({"one": {"required": true}});
         });
 
+        it("should not include controls that have no errors", () => {
+          var one = new Control(null, Validators.required);
+          var two = new Control("two");
+          var g = new ControlGroup({"one": one, "two": two});
+
+          expect(g.controlsErrors).toEqual({"one": {"required": true}});
+        });
+
         it("should run the validator with the value changes", () => {
           var c = new Control(null, Validators.required);
           var g = new ControlGroup({"one": c});
@@ -501,7 +509,7 @@ export function main() {
       });
 
       describe("controlsErrors", () => {
-        it("should run the validator with the initial value (valid)", () => {
+        it("should return null when no errors", () => {
           var a = new ControlArray(
               [new Control(1, Validators.required), new Control(2, Validators.required)]);
 
@@ -509,7 +517,7 @@ export function main() {
           expect(a.controlsErrors).toBe(null);
         });
 
-        it("should run the validator with the initial value (invalid)", () => {
+        it("should collect errors from the child controls", () => {
           var a = new ControlArray([
             new Control(1, Validators.required),
             new Control(null, Validators.required),
diff --git a/modules/angular2/test/core/forms/validators_spec.ts b/modules/angular2/test/core/forms/validators_spec.ts
index 86eed1fb3b..6d2826152f 100644
--- a/modules/angular2/test/core/forms/validators_spec.ts
+++ b/modules/angular2/test/core/forms/validators_spec.ts
@@ -83,54 +83,5 @@ export function main() {
         expect(c(new Control(""))).toEqual(null);
       });
     });
-
-    describe("controlGroupValidator", () => {
-      it("should collect errors from the child controls", () => {
-        var one = new Control("one", validator("a", true));
-        var two = new Control("two", validator("b", true));
-        var g = new ControlGroup({"one": one, "two": two});
-
-        expect(Validators.group(g)).toEqual({"one": {"a": true}, "two": {"b": true}});
-      });
-
-      it("should not include controls that have no errors", () => {
-        var one = new Control("one", validator("a", true));
-        var two = new Control("two");
-        var g = new ControlGroup({"one": one, "two": two});
-
-        expect(Validators.group(g)).toEqual({"one": {"a": true}});
-      });
-
-      it("should return null when no errors", () => {
-        var g = new ControlGroup({"one": new Control("one")});
-
-        expect(Validators.group(g)).toEqual(null);
-      });
-    });
-
-    describe("controlArrayValidator", () => {
-      it("should collect errors from the child controls", () => {
-        var one = new Control("one", validator("a", true));
-        var two = new Control("two", validator("b", true));
-        var a = new ControlArray([one, two]);
-
-        expect(Validators.array(a)).toEqual([{"a": true}, {"b": true}]);
-      });
-
-      it("should not include controls that have no errors", () => {
-        var one = new Control("one");
-        var two = new Control("two", validator("a", true));
-        var three = new Control("three");
-        var a = new ControlArray([one, two, three]);
-
-        expect(Validators.array(a)).toEqual([null, {"a": true}, null]);
-      });
-
-      it("should return null when no errors", () => {
-        var a = new ControlArray([new Control("one")]);
-
-        expect(Validators.array(a)).toEqual(null);
-      });
-    });
   });
 }