diff --git a/README.md b/README.md
index fc474c647367055bd61b5847c11e9c439cb2365b..8fa756332ed21c3f644c5566ae4fd84a54e57fad 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,9 @@ snmpEngineTime : The number of seconds since the value of the snmpEngineBoots ob
                  reverts to zero.
 ```
 
-**Note**: this onyl a SNMP section that supersedes the original section "snmp_uptime". It will not touch the original check. You can control the usage of this section by disable/enable SNMP section "snmp_uptime_exetended"
+**Note**: this is only a SNMP section that supersedes the original section "snmp_uptime". It will not touch the original check. You can control the usage of this section by disable/enable SNMP section "snmp_uptime_exetended"
+
+**NOTE**: this plugin my have some side efects on checks that use the original section and expect the uptime not larger than 497 days. I.e the interface inventory plugin ecpects this to calculate the "not used" state.
 
 Check Info: