diff --git a/models/TaxGroup.php b/models/TaxGroup.php
index 841ce6e..a2a1a21 100755
--- a/models/TaxGroup.php
+++ b/models/TaxGroup.php
@@ -138,7 +138,7 @@
         public function getCategories()
         {
             return $this->hasMany(Category::className(), [ 'id' => 'category_id' ])
-                        ->viaTable('tax_group_to_category', [ 'tax_group_id' => 'id' ])->inverseOf('taxGroups');
+                        ->viaTable('tax_group_to_category', [ 'tax_group_id' => 'id' ]);
         }
         
         /**
@@ -172,8 +172,7 @@
          */
         public function getTaxOptions()
         {
-            return $this->hasMany(TaxOption::className(), [ 'tax_group_id' => 'id' ])
-                        ->inverseOf('taxGroup');
+            return $this->hasMany(TaxOption::className(), [ 'tax_group_id' => 'id' ]);
         }
         
         /**
--
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