diff --git a/main/inc/lib/hook/HookEvent.php b/main/inc/lib/hook/HookEvent.php
index 017c0581f2..8180b38545 100644
--- a/main/inc/lib/hook/HookEvent.php
+++ b/main/inc/lib/hook/HookEvent.php
@@ -36,7 +36,7 @@ abstract class HookEvent implements HookEventInterface
 
     /**
      * Return the singleton instance of Hook event.
-     * @return HookEventInterface|null
+     * @return static
      */
     public static function create()
     {
diff --git a/main/inc/lib/hook/HookObserver.php b/main/inc/lib/hook/HookObserver.php
index 35856839f7..d4be7681af 100644
--- a/main/inc/lib/hook/HookObserver.php
+++ b/main/inc/lib/hook/HookObserver.php
@@ -34,7 +34,7 @@ abstract class HookObserver implements HookObserverInterface
     /**
      * Return the singleton instance of Hook observer.
      * If Hook Management plugin is not enabled, will return NULL
-     * @return HookEventInterface|null
+     * @return static|null
      */
     public static function create()
     {
diff --git a/main/inc/lib/hook/interfaces/base/HookEventInterface.php b/main/inc/lib/hook/interfaces/base/HookEventInterface.php
index bf14569807..dc4ffb7f9e 100644
--- a/main/inc/lib/hook/interfaces/base/HookEventInterface.php
+++ b/main/inc/lib/hook/interfaces/base/HookEventInterface.php
@@ -33,7 +33,7 @@ interface HookEventInterface
 
     /**
      * Return the singleton instance of Hook event.
-     * @return HookEventInterface|null
+     * @return static|null
      */
     public static function create();
 
diff --git a/main/inc/lib/hook/interfaces/base/HookObserverInterface.php b/main/inc/lib/hook/interfaces/base/HookObserverInterface.php
index 30bae87643..0b430c781f 100644
--- a/main/inc/lib/hook/interfaces/base/HookObserverInterface.php
+++ b/main/inc/lib/hook/interfaces/base/HookObserverInterface.php
@@ -10,7 +10,7 @@ interface HookObserverInterface
 {
     /**
      * Return the singleton instance of Hook observer.
-     * @return HookEventInterface|null
+     * @return static|null
      */
     public static function create();