diff --git a/tests/tools/test_process_registry.py b/tests/tools/test_process_registry.py
index 2c09bc1413..51f86f83e0 100644
--- a/tests/tools/test_process_registry.py
+++ b/tests/tools/test_process_registry.py
@@ -1956,7 +1956,10 @@ class TestSystemdCgroupIsolation:
             if value == "--property"
         ]
         assert "MemoryAccounting=yes" in properties
-        assert "OOMPolicy=kill" in properties
+        # systemd rejects OOMPolicy= on transient --scope units across the versions
+        # users run (239/245/249, #102486); emitting it fails the probe and every
+        # cron worker dispatch. MemoryMax + MemoryAccounting carry the isolation.
+        assert not any(p.startswith("OOMPolicy=") for p in properties), properties
         memory_max = next(
             value for value in properties if value.startswith("MemoryMax=")
         )