md-autocomplete ordering dropdown items

I have a md-autocomplete field:

<md-autocomplete md-selected-item="videoInfo.lineUp[1]" md-items="item in searchQuery(searchText1)" md-search-text="searchText1" md-item-text="item.display" md-floating-label="Loosehead">
    <span md-highlight-text="searchText1">{{item.display}}</span>
</md-autocomplete>

I populate md-items with

$scope.searchQuery = function (searchText) {
    var users = [];
    angular.forEach($scope.users,
        function (value, key) {
            // value = user object
            // key = userId
            var dN = value["display_name"];
            if (dN) {
                var obj = {};
                obj[key] = value;
                obj["display"] = dN;
                if (dN.toLowerCase().indexOf(searchText.toLowerCase()) !== -1) {
                    users.push(obj);
                }
            }
        });
    return users;
}

Is there a way to order the items in the dropdown alphabetically?

md-items="item in searchQuery(searchText1) | orderBy : display"