diff --git a/src/Cli/Executable/Xtrabackup8.php b/src/Cli/Executable/Xtrabackup8.php
index d28ec1f1..77bb3462 100644
--- a/src/Cli/Executable/Xtrabackup8.php
+++ b/src/Cli/Executable/Xtrabackup8.php
@@ -175,7 +175,7 @@ public function createCommandLine() : CommandLine
             $cmdDump->addOption('--databases', implode(' ', $this->databases));
         }
 
-        $cmdDump->addArgument($this->dumpDir);
+        $cmdDump->addOption('--target-dir', $this->dumpDir);
 
         return $process;
     }