diff --git a/htdocs/categories/class/api_categories.class.php b/htdocs/categories/class/api_categories.class.php
index f7a2addef3d..36b3e10174a 100644
--- a/htdocs/categories/class/api_categories.class.php
+++ b/htdocs/categories/class/api_categories.class.php
@@ -264,17 +264,17 @@ class Categories extends DolibarrApi
             )
         );
     }
-    
+
     /**
      * Link an object to a category by id
      *
      * @param int $id  ID of category
      * @param string   $type Type of category ('member', 'customer', 'supplier', 'product', 'contact')
      * @param int      $object_id ID of object
-     * 
+     *
      * @return array
      * @throws RestException
-     * 
+     *
      * @url POST {id}/objects/{type}/{object_id}
      */
     public function link_object_by_id($id, $type, $object_id)
@@ -282,17 +282,17 @@ class Categories extends DolibarrApi
         if (empty($type) || empty($object_id)) {
             throw new RestException(401);
         }
-        
+
         if(! DolibarrApiAccess::$user->rights->categorie->lire) {
             throw new RestException(401);
         }
-        
+
         $result = $this->category->fetch($id);
         if( ! $result ) {
             throw new RestException(404, 'category not found');
         }
-        
-        # TODO Add all types
+
+        // TODO Add all types
         if ($type === "product") {
             if(! (DolibarrApiAccess::$user->rights->produit->creer || DolibarrApiAccess::$user->rights->service->creer)) {
                 throw new RestException(401);
@@ -301,7 +301,7 @@ class Categories extends DolibarrApi
         } else {
             throw new RestException(401, "this type is not recognized yet.");
         }
-        
+
         if (!empty($object)) {
             $result = $object->fetch($object_id);
             if ($result > 0) {
@@ -314,7 +314,7 @@ class Categories extends DolibarrApi
             } else {
                 throw new RestException(500, 'Error when fetching object', array_merge(array($object->error), $object->errors));
             }
-            
+
             return array(
                 'success' => array(
                     'code' => 200,
@@ -322,10 +322,10 @@ class Categories extends DolibarrApi
                 )
             );
         }
-        
+
         throw new RestException(401);
     }
-    
+
     /**
      * Link an object to a category by ref
      *
@@ -343,17 +343,17 @@ class Categories extends DolibarrApi
         if (empty($type) || empty($object_ref)) {
             throw new RestException(401);
         }
-        
+
         if(! DolibarrApiAccess::$user->rights->categorie->lire) {
             throw new RestException(401);
         }
-        
+
         $result = $this->category->fetch($id);
         if( ! $result ) {
             throw new RestException(404, 'category not found');
         }
-        
-        # TODO Add all types
+
+        // TODO Add all types
         if ($type === "product") {
             if(! (DolibarrApiAccess::$user->rights->produit->creer || DolibarrApiAccess::$user->rights->service->creer)) {
                 throw new RestException(401);
@@ -362,7 +362,7 @@ class Categories extends DolibarrApi
         } else {
             throw new RestException(401, "this type is not recognized yet.");
         }
-        
+
         if (!empty($object)) {
             $result = $object->fetch('', $object_ref);
             if ($result > 0) {
@@ -375,7 +375,7 @@ class Categories extends DolibarrApi
             } else {
                 throw new RestException(500, 'Error when fetching object', array_merge(array($object->error), $object->errors));
             }
-            
+
             return array(
                 'success' => array(
                     'code' => 200,
@@ -383,10 +383,10 @@ class Categories extends DolibarrApi
                 )
             );
         }
-        
+
         throw new RestException(401);
     }
-    
+
     /**
      * Unlink an object from a category by id
      *
@@ -404,17 +404,17 @@ class Categories extends DolibarrApi
         if (empty($type) || empty($object_id)) {
             throw new RestException(401);
         }
-        
+
         if(! DolibarrApiAccess::$user->rights->categorie->lire) {
             throw new RestException(401);
         }
-        
+
         $result = $this->category->fetch($id);
         if( ! $result ) {
             throw new RestException(404, 'category not found');
         }
-        
-        # TODO Add all types
+
+        // TODO Add all types
         if ($type === "product") {
             if(! (DolibarrApiAccess::$user->rights->produit->creer || DolibarrApiAccess::$user->rights->service->creer)) {
                 throw new RestException(401);
@@ -423,7 +423,7 @@ class Categories extends DolibarrApi
         } else {
             throw new RestException(401, "this type is not recognized yet.");
         }
-        
+
         if (!empty($object)) {
             $result = $object->fetch((int) $object_id);
             if ($result > 0) {
@@ -434,7 +434,7 @@ class Categories extends DolibarrApi
             } else {
                 throw new RestException(500, 'Error when fetching object', array_merge(array($object->error), $object->errors));
             }
-            
+
             return array(
                 'success' => array(
                     'code' => 200,
@@ -442,10 +442,10 @@ class Categories extends DolibarrApi
                 )
             );
         }
-        
+
         throw new RestException(401);
     }
-    
+
     /**
      * Unlink an object from a category by ref
      *
@@ -463,17 +463,17 @@ class Categories extends DolibarrApi
         if (empty($type) || empty($object_ref)) {
             throw new RestException(401);
         }
-        
+
         if(! DolibarrApiAccess::$user->rights->categorie->lire) {
             throw new RestException(401);
         }
-        
+
         $result = $this->category->fetch($id);
         if( ! $result ) {
             throw new RestException(404, 'category not found');
         }
-        
-        # TODO Add all types
+
+        // TODO Add all types
         if ($type === "product") {
             if(! (DolibarrApiAccess::$user->rights->produit->creer || DolibarrApiAccess::$user->rights->service->creer)) {
                 throw new RestException(401);
@@ -482,7 +482,7 @@ class Categories extends DolibarrApi
         } else {
             throw new RestException(401, "this type is not recognized yet.");
         }
-        
+
         if (!empty($object)) {
             $result = $object->fetch('', (string) $object_ref);
             if ($result > 0) {
@@ -493,7 +493,7 @@ class Categories extends DolibarrApi
             } else {
                 throw new RestException(500, 'Error when fetching object', array_merge(array($object->error), $object->errors));
             }
-            
+
             return array(
                 'success' => array(
                     'code' => 200,
@@ -501,7 +501,7 @@ class Categories extends DolibarrApi
                 )
             );
         }
-        
+
         throw new RestException(401);
     }