diff --git a/install/upgrade_to_2.13.php b/install/upgrade_to_2.13.php
index 61e1f06a4..8d55a6bc1 100644
--- a/install/upgrade_to_2.13.php
+++ b/install/upgrade_to_2.13.php
@@ -41,7 +41,6 @@ public function upgrade(Migration $migration) {
       $this->addFormAnswerTitle();
       $this->defaultValuesForTargets();
       $this->migrateItemtypeInQuestion();
-      // $this->fixInconsistency();
       $this->addTargetValidationSetting();
       $this->addFormVisibility();
       $this->addDashboardVisibility();
@@ -113,12 +112,6 @@ public function migrateItemtypeInQuestion() {
       }
    }
 
-   protected function fixInconsistency() {
-      $table = 'glpi_plugin_formcreator_answers';
-      $this->migration->changeField($table, 'plugin_formcreator_formanswers_id', 'plugin_formcreator_formanswers_id', 'integer', ['value' => '0']);
-      $this->migration->changeField($table, 'plugin_formcreator_questions_id', 'plugin_formcreator_questions_id', 'integer', ['value' => '0']);
-   }
-
    protected function addTargetValidationSetting() {
       $table = 'glpi_plugin_formcreator_targetchanges';
       $this->migration->addField($table, 'commonitil_validation_rule', 'integer', ['value' => '1', 'after' => 'category_question']);