diff --git a/README.md b/README.md
index c37b4e1d0ff405dcb9d6f6376dbcf718f3c0157e..9772bfc449ff4cb74e8d9e95cacac5721ec4e0c9 100644
--- a/README.md
+++ b/README.md
@@ -82,14 +82,13 @@ The plugin creates the service **_NTP server_** with the an optional alternate s
 
 | Option | Defailt value |
 | ------ | ------ |
-| Service Description suffix | none |
+| Service description | none |
 | Server IP-address or name | IP-Address/Hostname of the monitored host |
 | NTP port | 123 |
 | Request timeout | 2 seconds |
-| Version | 4 |
+| NTP version | 4 |
 | Monitoring state if server is not synchronized | CRIT |
-| Monitoring state if no SIM card associated | WARN |
-| max. Stratum | 10, 14 |
+| max. stratum | 10, 15 |
 | max. offset in ms | 200, 500 |
 | max. delay in ms | 200, 500 |
 | max. root dispersion in s | 3, 5 |