diff --git a/class/actions_dolisirh.class.php b/class/actions_dolisirh.class.php
index d68ed7d..9fc949e 100644
--- a/class/actions_dolisirh.class.php
+++ b/class/actions_dolisirh.class.php
@@ -46,10 +46,10 @@ class ActionsDoliSIRH
 	 */
 	public $results = array();
 
-	/**
-	 * @var string String displayed by executeHook() immediately after return
-	 */
-	public $resprints;
+    /**
+     * @var string|null String displayed by executeHook() immediately after return
+     */
+    public ?string $resprints;
 
 	/**
 	 * Constructor
diff --git a/class/timesheet.class.php b/class/timesheet.class.php
index a4de574..7b7b02e 100644
--- a/class/timesheet.class.php
+++ b/class/timesheet.class.php
@@ -54,7 +54,7 @@ class TimeSheet extends SaturneObject
     /**
      * @var int Does object support extrafields ? 0 = No, 1 = Yes.
      */
-    public int $isextrafieldmanaged = 1;
+    public $isextrafieldmanaged = 1;
 
     /**
      * @var string Name of icon for timesheet. Must be a 'fa-xxx' fontawesome code (or 'fa-xxx_fa_color_size') or 'timesheet@dolisirh' if picto is file 'img/object_timesheet.png'.
@@ -203,12 +203,12 @@ class TimeSheet extends SaturneObject
     /**
      * @var int User ID.
      */
-    public int $fk_user_creat;
+    public $fk_user_creat;
 
     /**
      * @var int|null User ID.
      */
-    public ?int $fk_user_modif;
+    public $fk_user_modif;
 
     /**
      * @var int|string|null Project ID.
@@ -393,7 +393,7 @@ class TimeSheetLine extends SaturneObject
     /**
      * @var int Does object support extrafields ? 0 = No, 1 = Yes.
      */
-    public int $isextrafieldmanaged = 1;
+    public $isextrafieldmanaged = 1;
 
     /**
      * 'type' field format: