diff --git a/check_ntp.mkp b/check_ntp.mkp
index 4a17d2cd7bac2ac0857b3ba523f1868e99ad1b74..5c42ffd374b0a4e095a66ae6427996d87f8f19af 100644
Binary files a/check_ntp.mkp and b/check_ntp.mkp differ
diff --git a/checks/check_ntp b/checks/check_ntp
index d90573d019f5f94a047fffa6d7f10baad535aa46..49240be77021734a0571cada73e05bf46ec2c7dc 100644
--- a/checks/check_ntp
+++ b/checks/check_ntp
@@ -32,24 +32,16 @@ def check_ntp_arguments(params):
         args.append(f'--state_not_synchronized {params["state_not_synchronized"]}')
 
     if 'offset_levels' in params:
-        args.append(f'--offset{str(params["offset_levels"]).strip("(").strip(")")}')
-        # args.append(f'--offset_warn {params["offset_levels"][0]}')
-        # args.append(f'--offset_crit {params["offset_levels"][1]}')
+        args.append(f'--offset{params["offset_levels"][0]},{params["offset_levels"][1]}')
 
     if 'stratum_levels' in params:
-        args.append(f'--stratum {params["stratum_levels"].strip("(").strip(")")}')
-        # args.append(f'--stratum_warn {params["stratum_levels"][0]}')
-        # args.append(f'--stratum_crit {params["stratum_levels"][1]}')
+        args.append(f'--stratum {params["stratum_levels"][0]},{params["stratum_levels"][1]}')
 
     if 'dispersion_levels' in params:
-        args.append(f'--dispersion {params["dispersion_levels"].strip("(").strip(")")}')
-        # args.append(f'--dispersion_warn {params["dispersion_levels"][0]}')
-        # args.append(f'--dispersion_crit {params["dispersion_levels"][1]}')
+        args.append(f'--dispersion {params["dispersion_levels"][0]},{params["dispersion_levels"][1]}')
 
     if 'delay_levels' in params:
-        args.append(f'--delay {params["dispersion_levels"].strip("(").strip(")")}')
-        # args.append(f'--delay_warn {params["dispersion_levels"][0]}')
-        # args.append(f'--delay_crit {params["dispersion_levels"][1]}')
+        args.append(f'--delay {params["dispersion_levels"][0]},{params["dispersion_levels"][1]}')
 
     return args
 
diff --git a/lib/nagios/plugins/check_ntp b/lib/nagios/plugins/check_ntp
index 36fc5c02c55619676ab429e72962829fa5483213..f9e6e93b689c9b38ab6c1c540bfb5d68fbbcde52 100755
--- a/lib/nagios/plugins/check_ntp
+++ b/lib/nagios/plugins/check_ntp
@@ -9,20 +9,23 @@
 # Date  : 2022-10-04
 # File  : active_checks_ntp.py
 #
+# Active check to monitor NTP servers.
+#
+#
+#
 
 from typing import Optional, Sequence, Tuple
 from ipaddress import IPv4Address
 import sys
 import argparse
+from time import ctime, gmtime, strftime
+
 no_ntplib=False
 try:
     from ntplib import NTPClient, NTPStats
 except ModuleNotFoundError:
     no_ntplib=True
 
-from time import ctime, gmtime, strftime
-
-
 _ntp_leap = {
     0: 'no warning',
     1: 'last minute of the day has 61 seconds',
@@ -122,7 +125,7 @@ def _ntp_decode_ref_id(stratum: int, ref_id: int):
         return ref_id
 
 
-def parse_arguments(argv: Sequence[str]) -> argparse.Namespace:
+def parse_arguments(argv: Sequence[str]):  # -> argparse.Namespace  # is not available if ntplib is not installed
     def _warn_crit(arg: str) -> Optional[Tuple[int, int]]:
         arg = arg.strip('(').strip(')').split(',')
         warn, crit = arg
@@ -136,7 +139,7 @@ def parse_arguments(argv: Sequence[str]) -> argparse.Namespace:
     parser = argparse.ArgumentParser(
         formatter_class=argparse.ArgumentDefaultsHelpFormatter,
         epilog='Add WARN,CRIT levels separated by comma without brackets, like this: "--offset 200,500".'
-               'To use this check plugin you need to install the python ntplib in your CMK python environment.'
+               'To use this check plugin you need to install the python "ntplib" in your CMK python environment.'
     )
     parser.add_argument(
         '--server', '-s', required=True,
@@ -153,31 +156,6 @@ def parse_arguments(argv: Sequence[str]) -> argparse.Namespace:
     parser.add_argument(
         '--state_not_synchronized', type=int, default=2, choices=[0, 1, 2, 3],
         help='Monitoring state if not synchronized.')
-    # parser.add_argument(
-    #     '--stratum_warn', type=int, default=10,
-    #     help='WARN at Stratum, use value > 16 to disable.')
-    # parser.add_argument(
-    #     '--stratum_crit', type=int, default=15,
-    #     help='CRIT at Stratum, use value > 16 to disable.')
-    # parser.add_argument(
-    #     '--offset_warn', type=int, default=200,
-    #     help='WARN at offset in ms.')
-    # parser.add_argument(
-    #     '--offset_crit', type=int, default=500,
-    #     help='CRIT at offset in ms.')
-    # parser.add_argument(
-    #     '--delay_warn', type=int, default=200,
-    #     help='WARN at delay in ms.')
-    # parser.add_argument(
-    #     '--delay_crit', type=int, default=500,
-    #     help='CRIT at delay in ms.')
-    # parser.add_argument(
-    #     '--dispersion_warn', type=int, default=3,
-    #     help='WARN at root dispersion in seconds.')
-    # parser.add_argument(
-    #     '--dispersion_crit', type=int, default=5,
-    #     help='CRIT at root dispersion in seconds.')
-
     parser.add_argument(
         '--stratum', type=_warn_crit, default=(10, 15),
         help='WARN,CRIT levels for stratum. Use values > 16 to disable.')
diff --git a/web/plugins/wato/active_checks_ntp.py b/web/plugins/wato/active_checks_ntp.py
index 0164e07d27227c2806993441757c3c089abaed64..42d2184a21fb73e217180f77394c06a5da2a300f 100644
--- a/web/plugins/wato/active_checks_ntp.py
+++ b/web/plugins/wato/active_checks_ntp.py
@@ -102,7 +102,7 @@ def _valuespec_active_checks_ntp():
                          ),
                          Integer(
                              title=_('Critical at'),
-                             default_value=14,
+                             default_value=15,
                              maxvalue=18,
                              help=_(
                                  'The stratum (\'distance\' to the reference clock) at which the check gets critical.'),
@@ -111,9 +111,9 @@ def _valuespec_active_checks_ntp():
                  )),
                 ('offset_levels',
                  Tuple(
-                     title=_('Time Offset in ms'),
+                     title=_('max. offset in ms'),
                      help=_('Mean offset in the times reported between this local host and the remote peer or server.'
-                            'Note: The levels will also be used as lower levels.'),
+                            'Note: This levels will also be used as lower levels.'),
                      elements=[
                          Integer(
                              title=_('Warning at'),