diff --git a/taxonomy_tools_publisher/taxonomy_tools_publisher.install b/taxonomy_tools_publisher/taxonomy_tools_publisher.install
index efa449e..f8d0bba 100644
--- a/taxonomy_tools_publisher/taxonomy_tools_publisher.install
+++ b/taxonomy_tools_publisher/taxonomy_tools_publisher.install
@@ -234,7 +234,7 @@ function taxonomy_tools_publisher_disable() {
     if (db_table_exists($original)) {
       // Make backup for field values.
       $backup = $field . '_backup';
-      db_query("CREATE TABLE $backup SELECT * FROM $original");
+      db_query('CREATE TABLE {' . $backup . '} SELECT * FROM {' . $original . '}');
     }
   }
   // Delete fields.
@@ -264,7 +264,7 @@ function taxonomy_tools_publisher_uninstall() {
   foreach ($fields as $field) {
     $backup = $field . '_backup';
     if (db_table_exists($backup)) {
-      db_query("DROP TABLE $backup");
+      db_query('DROP TABLE {' . $backup . '}');
     }
   }
   drupal_set_message(t('Taxonomy Publisher uninstalled'));