diff --git a/models/Category.php b/models/Category.php
index 0057f7c..8458788 100755
--- a/models/Category.php
+++ b/models/Category.php
@@ -29,6 +29,7 @@
      * @property ProductCategory[] $productCategories
      * @property Brand[]           $brands
      * @property TaxGroup[]        $taxGroups
+     * @property Category[]        $siblings
      *       * From language behavior *
      * @property CategoryLang      $lang
      * @property CategoryLang[]    $langs
@@ -149,7 +150,7 @@
         public function getProducts()
         {
             return $this->hasMany(Product::className(), [ 'id' => 'product_id' ])
-                        ->viaTable('product_category', [ 'category_id' => 'id' ])->inverseOf('categories');
+                        ->viaTable('product_category', [ 'category_id' => 'id' ]);
         }
         
         /**
@@ -309,4 +310,20 @@
             return $this->hasMany(TaxGroup::className(), [ 'id' => 'tax_group_id' ])
                         ->viaTable('tax_group_to_category', [ 'category_id' => 'id' ]);
         }
+        
+        /**
+         * Get query to obtain siblings of current category (categories with same parent)
+         *
+         * @return ActiveQuery
+         */
+        public function getSiblings()
+        {
+            return $this->hasMany($this::className(), [ 'parent_id' => 'parent_id' ])
+                        ->andWhere(
+                            [
+                                'not',
+                                [ 'id' => $this->id ],
+                            ]
+                        );
+        }
     }
diff --git a/models/Product.php b/models/Product.php
index 8096f49..3e7ddd1 100755
--- a/models/Product.php
+++ b/models/Product.php
@@ -365,7 +365,7 @@
         public function getCategories()
         {
             return $this->hasMany(Category::className(), [ 'id' => 'category_id' ])
-                        ->viaTable('product_category', [ 'product_id' => 'id' ])->inverseOf('products');
+                        ->viaTable('product_category', [ 'product_id' => 'id' ]);
         }
         
         /**
--
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