diff --git a/htdocs/core/modules/product/mod_codeproduct_elephant.php b/htdocs/core/modules/product/mod_codeproduct_elephant.php
index 18d91631d3c..523dc8bd7c4 100644
--- a/htdocs/core/modules/product/mod_codeproduct_elephant.php
+++ b/htdocs/core/modules/product/mod_codeproduct_elephant.php
@@ -60,7 +60,10 @@ class mod_codeproduct_elephant extends ModeleProductCode
      */
 	public $version = 'dolibarr';    		// 'development', 'experimental', 'dolibarr'
 
-	public $code_auto;                     // Numerotation automatique
+	/**
+	 * @var int Automatic numbering
+	 */
+	public $code_auto;
 
 	public $searchcode; // String de recherche
 
diff --git a/htdocs/core/modules/product/mod_codeproduct_leopard.php b/htdocs/core/modules/product/mod_codeproduct_leopard.php
index 77e14200264..04a15c9b8a5 100644
--- a/htdocs/core/modules/product/mod_codeproduct_leopard.php
+++ b/htdocs/core/modules/product/mod_codeproduct_leopard.php
@@ -65,7 +65,10 @@ class mod_codeproduct_leopard extends ModeleProductCode
      */
 	public $version = 'dolibarr';    		// 'development', 'experimental', 'dolibarr'
 
-	public $code_auto; 	                // Numerotation automatique
+	/**
+	 * @var int Automatic numbering
+	 */
+	public $code_auto;
 
 
 	/**