diff --git a/CRM/Core/BAO/CustomField.php b/CRM/Core/BAO/CustomField.php
index 14014b3cf9aa2f2fe78e7b56d08fbd7394381c32..43b0588bac55a7ba1f3593eb72b31b641ab6d236 100644
--- a/CRM/Core/BAO/CustomField.php
+++ b/CRM/Core/BAO/CustomField.php
@@ -365,7 +365,6 @@ class CRM_Core_BAO_CustomField extends CRM_Core_DAO_CustomField {
       $fields = Civi::Cache('fields')->get("custom importableFields $cacheKey");
 
       if ($fields === NULL) {
-        $cfTable = self::getTableName();
 
         $extends = '';
         if (is_array($customDataType)) {
@@ -398,37 +397,37 @@ class CRM_Core_BAO_CustomField extends CRM_Core_DAO_CustomField {
         // Temporary hack - in 5.27 a new field is added to civicrm_custom_field. There is a high
         // risk this function is called before the upgrade page can be reached and if
         // so it will potentially result in fatal error.
-        $serializeField = CRM_Core_BAO_Domain::isDBVersionAtLeast('5.27.alpha1') ? "$cfTable.serialize," : '';
+        $serializeField = CRM_Core_BAO_Domain::isDBVersionAtLeast('5.27.alpha1') ? "custom_field.serialize," : '';
 
-        $query = "SELECT $cfTable.id, $cfTable.label,
+        $query = "SELECT custom_field.id, custom_field.label,
                             $cgTable.title,
-                            $cfTable.data_type,
-                            $cfTable.html_type,
-                            $cfTable.default_value,
-                            $cfTable.options_per_line, $cfTable.text_length,
-                            $cfTable.custom_group_id,
-                            $cfTable.is_required,
-                            $cfTable.column_name,
-                            $cgTable.extends, $cfTable.is_search_range,
+                            custom_field.data_type,
+                            custom_field.html_type,
+                            custom_field.default_value,
+                            custom_field.options_per_line, custom_field.text_length,
+                            custom_field.custom_group_id,
+                            custom_field.is_required,
+                            custom_field.column_name,
+                            $cgTable.extends, custom_field.is_search_range,
                             $cgTable.extends_entity_column_value,
                             $cgTable.extends_entity_column_id,
-                            $cfTable.is_view,
-                            $cfTable.option_group_id,
-                            $cfTable.date_format,
-                            $cfTable.time_format,
+                            custom_field.is_view,
+                            custom_field.option_group_id,
+                            custom_field.date_format,
+                            custom_field.time_format,
                             $cgTable.is_multiple,
                             $serializeField
                             $cgTable.table_name,
                             og.name as option_group_name
-                     FROM $cfTable
+                     FROM civicrm_custom_field custom_field
                      INNER JOIN $cgTable
-                       ON $cfTable.custom_group_id = $cgTable.id
+                       ON custom_field.custom_group_id = $cgTable.id
                      LEFT JOIN civicrm_option_group og
-                       ON $cfTable.option_group_id = og.id
+                       ON custom_field.option_group_id = og.id
                      WHERE ( 1 ) ";
 
         if (!$showAll) {
-          $query .= " AND $cfTable.is_active = 1 AND $cgTable.is_active = 1 ";
+          $query .= " AND custom_field.is_active = 1 AND $cgTable.is_active = 1 ";
         }
 
         if ($inline) {
@@ -465,7 +464,7 @@ class CRM_Core_BAO_CustomField extends CRM_Core_DAO_CustomField {
 
         $query .= " $extends AND $permissionClause
                         ORDER BY $cgTable.weight, $cgTable.title,
-                                 $cfTable.weight, $cfTable.label";
+                                 custom_field.weight, custom_field.label";
 
         $dao = CRM_Core_DAO::executeQuery($query);