diff --git a/README.md b/README.md
index 542c9539cab635b0bf91a0b6657f2ccc42db2cec..43440697efe3a36c1f50ef71b984f6c56a9921e1 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-[PACKAGE]: ../../raw/master/mkp/cisco_vpn_tunnel-0.4.0-20230607.mkp "cisco_vpn_tunnel-0.4.0-20230607.mkp"
+[PACKAGE]: ../../raw/master/mkp/cisco_vpn_tunnel-0.4.1-20240814.mkp "cisco_vpn_tunnel-0.4.1-20240814.mkp"
 # Cisco IPSec VPN tunnel
 
 Monitors the status of Cisco IPSec VPN tunnels. This is a complete rewrite of the original check
diff --git a/mkp/cisco_vpn_tunnel-0.4.1-20240814.mkp b/mkp/cisco_vpn_tunnel-0.4.1-20240814.mkp
new file mode 100644
index 0000000000000000000000000000000000000000..52ba3cc4c618d39a7b667bf9257b62b9c8c7a253
Binary files /dev/null and b/mkp/cisco_vpn_tunnel-0.4.1-20240814.mkp differ
diff --git a/source/agent_based/cisco_vpn_tunnel.py b/source/agent_based/cisco_vpn_tunnel.py
index 912c365005fb227588023c408e54dad2b9eb0ef9..61380c062da707921ac1564bd2d6a19e497fc05e 100644
--- a/source/agent_based/cisco_vpn_tunnel.py
+++ b/source/agent_based/cisco_vpn_tunnel.py
@@ -22,7 +22,7 @@
 # 2022-12-17: check input values for isdigit()
 # 2023-06-07: fixed ValueError (not enough values to unpack (expected 10, got 4)) in parse function (ipsec_tunnel_entry)
 # 2023-06-07: fixed ValueError (not enough values to unpack (expected 18, got 4)) in parse function (ike_tunnel_entry)
-#
+# 2024-08-14: fixed missing () on isdigit
 
 # snmpwalk sample
 #
@@ -172,7 +172,7 @@ def parse_cisco_vpn_tunnel(string_table: List[StringTable]) -> Dict[str, IkeSa]:
             ipsec_sa.hc_out_octets += int(hc_out_octets) if hc_out_octets.isdigit() else 0
             ipsec_sa.out_pkts += int(out_pkts) if out_pkts.isdigit() else 0
             ipsec_sa.out_drop_pkts += int(out_drop_pkts) if out_drop_pkts.isdigit() else 0
-            if active_time.isdigit and (int(active_time) // 100 > ipsec_sa.active_time):
+            if active_time.isdigit() and (int(active_time) // 100 > ipsec_sa.active_time):
                 ipsec_sa.active_time = int(active_time) // 100
 
     # IKE SA
diff --git a/source/packages/cisco_vpn_tunnel b/source/packages/cisco_vpn_tunnel
index f52593ba9919fd80ac1ea04b02854f8c24b9d2ff..0cee533b3b0697aff484762e5d2c9dade948ea7f 100644
--- a/source/packages/cisco_vpn_tunnel
+++ b/source/packages/cisco_vpn_tunnel
@@ -9,7 +9,7 @@
            'gui': ['metrics/cisco_vpn_tunnel.py', 'wato/cisco_vpn_tunnel.py']},
  'name': 'cisco_vpn_tunnel',
  'title': 'Monitor Cisco VPN Tunnel',
- 'version': '0.4.0-20230607',
+ 'version': '0.4.1-20240814',
  'version.min_required': '2.1.0b1',
- 'version.packaged': '2.2.0p24',
+ 'version.packaged': 'cmk-mkp-tool 0.2.0',
  'version.usable_until': None}