diff --git a/application/Espo/Core/UpgradeManager.php b/application/Espo/Core/UpgradeManager.php
index 170f40d5cc..3c2102c8e3 100644
--- a/application/Espo/Core/UpgradeManager.php
+++ b/application/Espo/Core/UpgradeManager.php
@@ -33,29 +33,4 @@ class UpgradeManager extends Upgrades\Base
 		'after' => 'AfterUpgrade',
 	);
 
-	/**
-	 * Main upgrade process
-	 *
-	 * @param  string $upgradeId Upgrade ID, gotten in upload stage
-	 * @return bool
-	 */
-	public function run($upgradeId)
-	{
-		/** set writable permission for espo */
-		$permissionRes = $this->getFileManager()->getPermissionUtils()->setMapPermission(array('0664', '0775'));
-		if (!$permissionRes) {
-			throw new Error( 'Permission denied for the following items: /'. implode(', /', $this->getFileManager()->getPermissionUtils()->getLastError()) );
-		}
-
-		parent::run($upgradeId);
-
-		/** return the previous permission */
-		$permissionRes = $this->getFileManager()->getPermissionUtils()->setMapPermission();
-		if (!$permissionRes) {
-			throw new Error( 'Permission denied for the following items: '. implode(', ', $this->getFileManager()->getPermissionUtils()->getLastError()) );
-		}
-	}
-
-
-
 }
\ No newline at end of file