diff --git a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Bundle.php b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Bundle.php
index a8ac142e..e592b5d0 100644
--- a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Bundle.php
+++ b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Bundle.php
@@ -268,7 +268,7 @@ public function prepareAttributesForSave(array $rowData, $withDefaultValue = tru
                 if (isset($rowData[$attrCode]) && strlen($rowData[$attrCode])) {
                     $resultAttrs[$attrCode] =
                         ('select' == $attrParams['type'] || 'multiselect' == $attrParams['type'])
-                            ? $attrParams['options'][Mage::helper('fastsimpleimport')->strtolower($rowData[$attrCode])]
+                            ? $attrParams['options'][strtolower($rowData[$attrCode])]
                             : $rowData[$attrCode];
                 } elseif (array_key_exists($attrCode, $rowData)) {
                     $resultAttrs[$attrCode] = $rowData[$attrCode];
diff --git a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Configurable.php b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Configurable.php
index b15d1301..4dfd2afd 100644
--- a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Configurable.php
+++ b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Configurable.php
@@ -50,7 +50,7 @@ public function prepareAttributesForSave(array $rowData, $withDefaultValue = tru
                 if (isset($rowData[$attrCode]) && strlen($rowData[$attrCode])) {
                     $resultAttrs[$attrCode] =
                         ('select' == $attrParams['type'] || 'multiselect' == $attrParams['type'])
-                            ? $attrParams['options'][Mage::helper('fastsimpleimport')->strtolower($rowData[$attrCode])]
+                            ? $attrParams['options'][strtolower($rowData[$attrCode])]
                             : $rowData[$attrCode];
                 } elseif (array_key_exists($attrCode, $rowData)) {
                     $resultAttrs[$attrCode] = $rowData[$attrCode];
@@ -245,7 +245,7 @@ public function saveData()
                     );
                 }
                 if (isset($rowData['_super_attribute_option']) && strlen($rowData['_super_attribute_option'])) {
-                    $optionId = $attrParams['options'][Mage::helper('fastsimpleimport')->strtolower($rowData['_super_attribute_option'])];
+                    $optionId = $attrParams['options'][strtolower($rowData['_super_attribute_option'])];
 
                     if (!isset($productSuperData['used_attributes'][$attrParams['id']][$optionId])) {
                         $productSuperData['used_attributes'][$attrParams['id']][$optionId] = false;
diff --git a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Grouped.php b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Grouped.php
index c58cd579..f5ec4c60 100644
--- a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Grouped.php
+++ b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Grouped.php
@@ -30,7 +30,7 @@ public function prepareAttributesForSave(array $rowData, $withDefaultValue = tru
                 if (isset($rowData[$attrCode]) && strlen($rowData[$attrCode])) {
                     $resultAttrs[$attrCode] =
                         ('select' == $attrParams['type'] || 'multiselect' == $attrParams['type'])
-                            ? $attrParams['options'][Mage::helper('fastsimpleimport')->strtolower($rowData[$attrCode])]
+                            ? $attrParams['options'][strtolower($rowData[$attrCode])]
                             : $rowData[$attrCode];
                 } elseif (array_key_exists($attrCode, $rowData)) {
                     $resultAttrs[$attrCode] = $rowData[$attrCode];
diff --git a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Simple.php b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Simple.php
index 7fc18e27..bb64f769 100644
--- a/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Simple.php
+++ b/src/app/code/community/AvS/FastSimpleImport/Model/Import/Entity/Product/Type/Simple.php
@@ -30,7 +30,7 @@ public function prepareAttributesForSave(array $rowData, $withDefaultValue = tru
                 if (isset($rowData[$attrCode]) && strlen($rowData[$attrCode])) {
                     $resultAttrs[$attrCode] =
                         ('select' == $attrParams['type'] || 'multiselect' == $attrParams['type'])
-                            ? $attrParams['options'][Mage::helper('fastsimpleimport')->strtolower($rowData[$attrCode])]
+                            ? $attrParams['options'][strtolower($rowData[$attrCode])]
                             : $rowData[$attrCode];
                 } elseif (array_key_exists($attrCode, $rowData)) {
                     $resultAttrs[$attrCode] = $rowData[$attrCode];