diff --git a/hesabixCore/src/Command/UpdateSoftwareCommand.php b/hesabixCore/src/Command/UpdateSoftwareCommand.php
index d5d1600..1b77ea6 100644
--- a/hesabixCore/src/Command/UpdateSoftwareCommand.php
+++ b/hesabixCore/src/Command/UpdateSoftwareCommand.php
@@ -290,7 +290,7 @@ class UpdateSoftwareCommand extends Command
     private function backupDatabase(): string
 {
     $backupFile = $this->backupDir . '/db_backup_' . time() . '.sql';
-    $dbUrl = $this->params->get('database_url');
+    $dbUrl = $this->params->get('DATABASE_URL');
     $urlParts = parse_url($dbUrl);
 
     $dbHost = $urlParts['host'] ?? 'localhost';
@@ -429,4 +429,4 @@ class UpdateSoftwareCommand extends Command
         $state['log'] .= $output->getVerbosity() >= OutputInterface::VERBOSITY_NORMAL ? $message . "\n" : '';
         file_put_contents($this->stateFile, json_encode($state));
     }
-}
\ No newline at end of file
+}