diff --git a/test_regress/t/t_sys_fstrobe.pl b/test_regress/t/t_sys_fstrobe.pl
index 6bbedacab..55224d3d6 100755
--- a/test_regress/t/t_sys_fstrobe.pl
+++ b/test_regress/t/t_sys_fstrobe.pl
@@ -8,7 +8,7 @@ if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); di
 # Version 2.0.
 # SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
 
-scenarios(simulator => 1);
+scenarios(vlt => 1);  # Not vltmt due to possible race
 
 compile(
     );