diff --git a/pkg/runtime/helper.go b/pkg/runtime/helper.go
index 7a3c266a78d..4fd370ca5ef 100644
--- a/pkg/runtime/helper.go
+++ b/pkg/runtime/helper.go
@@ -71,15 +71,18 @@ func ExtractList(obj Object) ([]Object, error) {
 	list := make([]Object, items.Len())
 	for i := range list {
 		raw := items.Index(i)
-		var found bool
-		switch raw.Kind() {
-		case reflect.Interface, reflect.Ptr:
-			list[i], found = raw.Interface().(Object)
+		switch item := raw.Interface().(type) {
+		case Object:
+			list[i] = item
+		case RawExtension:
+			list[i] = &Unknown{
+				RawJSON: item.RawJSON,
+			}
 		default:
-			list[i], found = raw.Addr().Interface().(Object)
-		}
-		if !found {
-			return nil, fmt.Errorf("item[%v]: Expected object, got %#v(%s)", i, raw.Interface(), raw.Kind())
+			var found bool
+			if list[i], found = raw.Addr().Interface().(Object); !found {
+				return nil, fmt.Errorf("%v: item[%v]: Expected object, got %#v(%s)", obj, i, raw.Interface(), raw.Kind())
+			}
 		}
 	}
 	return list, nil
diff --git a/pkg/runtime/helper_test.go b/pkg/runtime/helper_test.go
index 7ec7cbdce56..fc5810b9bd7 100644
--- a/pkg/runtime/helper_test.go
+++ b/pkg/runtime/helper_test.go
@@ -22,6 +22,7 @@ import (
 
 	"k8s.io/kubernetes/pkg/api"
 	"k8s.io/kubernetes/pkg/api/testapi"
+	"k8s.io/kubernetes/pkg/api/v1"
 	"k8s.io/kubernetes/pkg/runtime"
 	"k8s.io/kubernetes/pkg/util"
 
@@ -87,6 +88,28 @@ func TestExtractListGeneric(t *testing.T) {
 	}
 }
 
+func TestExtractListGenericV1(t *testing.T) {
+	pl := &v1.List{
+		Items: []runtime.RawExtension{
+			{RawJSON: []byte("foo")},
+			{RawJSON: []byte("bar")},
+		},
+	}
+	list, err := runtime.ExtractList(pl)
+	if err != nil {
+		t.Fatalf("Unexpected error %v", err)
+	}
+	if e, a := len(list), len(pl.Items); e != a {
+		t.Fatalf("Expected %v, got %v", e, a)
+	}
+	if obj, ok := list[0].(*runtime.Unknown); !ok {
+		t.Fatalf("Expected list[0] to be *runtime.Unknown, it is %#v", obj)
+	}
+	if obj, ok := list[1].(*runtime.Unknown); !ok {
+		t.Fatalf("Expected list[1] to be *runtime.Unknown, it is %#v", obj)
+	}
+}
+
 type fakePtrInterfaceList struct {
 	Items *[]runtime.Object
 }