diff --git a/docs/content/error/ngOptions/trkslct.ngdoc b/docs/content/error/ngOptions/trkslct.ngdoc
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-@ngdoc error
-@name ngOptions:trkslct
-@fullName Comprehension expression cannot contain both `select as` and `track by` expressions.
-@description
-
-NOTE: This error was introduced in 1.3.0-rc.5, and was removed for 1.3.0-rc.6 in order to
-not break existing apps.
-
-This error occurs when 'ngOptions' is passed a comprehension expression that contains both a
-`select as` expression and a `track by` expression. These two expressions are fundamentally
-incompatible.
-
- * Example of bad expression: `<select ng-options="item.subItem as item.label for item in values track by item.id" ng-model="selected">`
-   `values: [{id: 1, label: 'aLabel', subItem: {name: 'aSubItem'}}, {id: 2, label: 'bLabel', subItem: {name: 'bSubItem'}}]`,
-   `$scope.selected = {name: 'aSubItem'};`
- * track by is always applied to `value`, with purpose to preserve the selection,
-   (to `item` in this case)
- * To calculate whether an item is selected, `ngOptions` does the following:
-   1. apply `track by` to the values in the array:
-      In the example: [1,2]
-   2. apply `track by` to the already selected value in `ngModel`:
-      In the example: this is not possible, as `track by` refers to `item.id`, but the selected
-      value from `ngModel` is `{name: aSubItem}`.
-
-Here's an example of how to make this example work by using `track by` without `select as`:
-
-```
-<select ng-model="selected" ng-options="item.label for item in values track by item.id">
-```
-
-Note: This would store the whole `item` as the model to `scope.selected` instead of `item.subItem`.
-
-For more information on valid expression syntax, see 'ngOptions' in {@link ng.directive:select select} directive docs.