diff --git a/eloquent-collections.md b/eloquent-collections.md
index c5ca4037dc..715ae8fb4c 100644
--- a/eloquent-collections.md
+++ b/eloquent-collections.md
@@ -245,7 +245,7 @@ $users = $users->mergeVisible(['middle_name']);
 <a name="method-mergeHidden"></a>
 #### `mergeHidden($attributes)` {.collection-method}
 
-The `mergeHidden` method [hides additional attributes](/docs/{{version}}/eloquent-serialization#hiding-attributes-from-json) twhile retaining existing hidden attributes:
+The `mergeHidden` method [hides additional attributes](/docs/{{version}}/eloquent-serialization#hiding-attributes-from-json) while retaining existing hidden attributes:
 
 ```php
 $users = $users->mergeHidden(['last_login_at']);
diff --git a/eloquent.md b/eloquent.md
index 27e56bdd72..4224b247bc 100644
--- a/eloquent.md
+++ b/eloquent.md
@@ -325,8 +325,19 @@ If you need to customize the names of the columns used to store the timestamps,
 
 class Flight extends Model
 {
-    const CREATED_AT = 'creation_date';
-    const UPDATED_AT = 'updated_date';
+    /**
+     * The name of the "created at" column.
+     *
+     * @var string|null
+     */
+    public const CREATED_AT = 'creation_date';
+
+    /**
+     * The name of the "updated at" column.
+     *
+     * @var string|null
+     */
+    public const UPDATED_AT = 'updated_date';
 }
 ```