diff --git a/tests/runtests.pl b/tests/runtests.pl
index af1bedd4416d16db272f66fcba38f6bbd7166ce9..95fc2f250f61228136fafaf6c17fed8592cfb5e8 100755
--- a/tests/runtests.pl
+++ b/tests/runtests.pl
@@ -516,6 +516,9 @@ sub singletest {
         $res /= 256;
     }
 
+    # remove the special FTP command file after each test!
+    unlink($FTPDCMD);
+
     my @err = getpart("verify", "errorcode");
     my $errorcode = $err[0];