diff --git a/common/modules/product/models/Product.php b/common/modules/product/models/Product.php
index 385a6a3..7fc06ba 100755
--- a/common/modules/product/models/Product.php
+++ b/common/modules/product/models/Product.php
@@ -337,7 +337,7 @@
                                   )
                                   ->one();
             if ($taxOption) {
-                if (!empty( $taxOption->value->synonym )) {
+                if (!empty( $taxOption->synonym )) {
                     $taxOption = $taxOption->synonym;
                 } else {
                     $taxOption = $taxOption->value->value;
--
libgit2 0.21.4