diff --git a/bin/tests/system/nsupdate/tests_sh_nsupdate.py b/bin/tests/system/nsupdate/tests_sh_nsupdate.py
index 897eb08316..5c1a9c7e3d 100644
--- a/bin/tests/system/nsupdate/tests_sh_nsupdate.py
+++ b/bin/tests/system/nsupdate/tests_sh_nsupdate.py
@@ -9,6 +9,14 @@
 # See the COPYRIGHT file distributed with this work for additional
 # information regarding copyright ownership.
 
+import platform
 
+import pytest_custom_markers
+
+
+MAX_RUNS = 2 if platform.system() == "FreeBSD" else 1  # GL#3846
+
+
+@pytest_custom_markers.flaky(max_runs=MAX_RUNS)
 def test_nsupdate(run_tests_sh):
     run_tests_sh()