Index: psutil/tests/test_posix.py
--- psutil/tests/test_posix.py.orig
+++ psutil/tests/test_posix.py
@@ -22,6 +22,7 @@ from psutil import LINUX
 from psutil import MACOS
 from psutil import OPENBSD
 from psutil import POSIX
+from psutil import SECBSD
 from psutil import SUNOS
 from psutil.tests import CI_TESTING
 from psutil.tests import HAS_NET_IO_COUNTERS
@@ -307,7 +308,7 @@ class TestSystemAPIs(PsutilTestCase):
         pids_psutil = psutil.pids()
 
         # on MACOS and OPENBSD ps doesn't show pid 0
-        if MACOS or OPENBSD and 0 not in pids_ps:
+        if MACOS or OPENBSD or SECBSD and 0 not in pids_ps:
             pids_ps.insert(0, 0)
 
         # There will often be one more process in pids_ps for ps itself