diff --git a/framework/CHANGELOG.md b/framework/CHANGELOG.md
index de641fba6a..e373c443f7 100644
--- a/framework/CHANGELOG.md
+++ b/framework/CHANGELOG.md
@@ -49,6 +49,7 @@ Yii Framework 2 Change Log
 - Bug #20583: Fix return value in `Request::getServerPort` (mspirkov)
 - Bug #20587: Fix `@var` annotation for `yii\rbac\Item::$ruleName` (mspirkov)
 - Bug #20589: Fix `@var` annotations for `yii\rbac\DbManager` properties (mspirkov)
+- Bug #20594: Fix `@return` annotation for `Instance::get()` (mspirkov)
 - Bug #20595: Fix `@return` annotation for `BaseHtml::getAttributeValue()` (mspirkov)
 
 
diff --git a/framework/di/Instance.php b/framework/di/Instance.php
index 8e7597a405..e5fa1c6441 100644
--- a/framework/di/Instance.php
+++ b/framework/di/Instance.php
@@ -173,7 +173,7 @@ class Instance
      * Returns the actual object referenced by this Instance object.
      * @param ServiceLocator|Container|null $container the container used to locate the referenced object.
      * If null, the method will first try `Yii::$app` then `Yii::$container`.
-     * @return object the actual object referenced by this Instance object.
+     * @return object|null the actual object referenced by this Instance object.
      */
     public function get($container = null)
     {