diff --git a/typo3/sysext/install/Classes/Updates/AbstractUpdate.php b/typo3/sysext/install/Classes/Updates/AbstractUpdate.php
index f926b5468a797a16ffee02281dc7867173b9ff32..a2eae36fefff4264b721f40ad72bc1e2303ed20d 100644
--- a/typo3/sysext/install/Classes/Updates/AbstractUpdate.php
+++ b/typo3/sysext/install/Classes/Updates/AbstractUpdate.php
@@ -99,10 +99,9 @@ abstract class AbstractUpdate
      */
     public function shouldRenderWizard()
     {
-        $showUpdate = 0;
         $explanation = '';
-        $result = $this->checkForUpdate($explanation, $showUpdate);
-        return $showUpdate > 0 || $result == true;
+        $result = $this->checkForUpdate($explanation);
+        return (bool)$result === true;
     }
 
     /**