diff --git a/bin/tests/system/isctest/mark.py b/bin/tests/system/isctest/mark.py
index 805371701d..4d7fcce147 100644
--- a/bin/tests/system/isctest/mark.py
+++ b/bin/tests/system/isctest/mark.py
@@ -43,6 +43,10 @@ def is_dnsrps_available():
     return True
 
 
+def is_host_freebsd(*_):
+    return platform.system() == "FreeBSD"
+
+
 def is_host_freebsd_13(*_):
     return platform.system() == "FreeBSD" and platform.release().startswith("13")
 
diff --git a/bin/tests/system/isctest/run.py b/bin/tests/system/isctest/run.py
index 9b6ef31236..65fd5ec8df 100644
--- a/bin/tests/system/isctest/run.py
+++ b/bin/tests/system/isctest/run.py
@@ -142,13 +142,17 @@ def perl(script: str, args: Optional[List[str]] = None) -> None:
 def retry_with_timeout(func, timeout, delay=1, msg=None):
     start_time = time.monotonic()
     exc_msg = None
+    fname = f"{func.__module__}.{func.__qualname__}()"
     while time.monotonic() < start_time + timeout:
         exc_msg = None
+        isctest.log.debug(f"retry_with_timeout: {fname} called")
         try:
             if func():
+                isctest.log.debug(f"retry_with_timeout: {fname} succeeded")
                 return
         except AssertionError as exc:
             exc_msg = str(exc)
+        isctest.log.debug(f"retry_with_timeout: {fname} failed, sleep {delay}s")
         time.sleep(delay)
     if exc_msg is not None:
         isctest.log.error(exc_msg)
@@ -156,7 +160,7 @@ def retry_with_timeout(func, timeout, delay=1, msg=None):
         if exc_msg is not None:
             msg = exc_msg
         else:
-            msg = f"{func.__module__}.{func.__qualname__} timed out after {timeout} s"
+            msg = f"{fname} timed out after {timeout} s"
     assert False, msg
 
 
diff --git a/bin/tests/system/kasp/tests_kasp.py b/bin/tests/system/kasp/tests_kasp.py
index 1a836a230d..89f2696e56 100644
--- a/bin/tests/system/kasp/tests_kasp.py
+++ b/bin/tests/system/kasp/tests_kasp.py
@@ -596,7 +596,7 @@ def cb_remove_keyfiles(params, ksks=None, zsks=None):
             },
             id="secondary.kasp",
             marks=pytest.mark.flaky(
-                max_runs=2, rerun_filter=isctest.mark.is_host_freebsd_13
+                max_runs=2, rerun_filter=isctest.mark.is_host_freebsd
             ),
         ),
         pytest.param(