diff --git a/app/code/core/Mage/Adminhtml/controllers/Catalog/Product/AttributeController.php b/app/code/core/Mage/Adminhtml/controllers/Catalog/Product/AttributeController.php
index c390a873e9..639107e973 100644
--- a/app/code/core/Mage/Adminhtml/controllers/Catalog/Product/AttributeController.php
+++ b/app/code/core/Mage/Adminhtml/controllers/Catalog/Product/AttributeController.php
@@ -262,6 +262,10 @@ public function saveAction()
                 */
                 $data['source_model'] = $helper->getAttributeSourceModelByInputType($data['frontend_input']);
                 $data['backend_model'] = $helper->getAttributeBackendModelByInputType($data['frontend_input']);
+                                
+                if ($model->getIsUserDefined() === null) {
+                    $data['backend_type'] = $model->getBackendTypeByInput($data['frontend_input']);
+                }
             }
 
             if (!isset($data['is_configurable'])) {
@@ -272,11 +276,7 @@ public function saveAction()
             }
             if (!isset($data['is_filterable_in_search'])) {
                 $data['is_filterable_in_search'] = 0;
-            }
-
-            if (is_null($model->getIsUserDefined()) || $model->getIsUserDefined() != 0) {
-                $data['backend_type'] = $model->getBackendTypeByInput($data['frontend_input']);
-            }
+            }            
 
             $defaultValueField = $model->getDefaultValueByInput($data['frontend_input']);
             if ($defaultValueField) {