diff --git a/tests/System/File/Ftp/FtpStorageTest.php b/tests/System/File/Ftp/FtpStorageTest.php
index 54ab64693..b0b335613 100644
--- a/tests/System/File/Ftp/FtpStorageTest.php
+++ b/tests/System/File/Ftp/FtpStorageTest.php
@@ -61,6 +61,10 @@ final class FtpStorageTest extends \PHPUnit\Framework\TestCase
             self::$con = null;
         }
 
+        if (self::$con === null) {
+            return;
+        }
+
         FtpStorage::with(self::$con);
     }