Bugfix unary operator

Author: filipnet

README.md

@@ -151,7 +151,7 @@ fi
 
 ## TROUBLESHOOTING
 For more details and troubleshooting with parameters please check:
-
+* Check_MK notification logfile: /omd/sites/{sitename}/var/log/notify.log
 * [Check_MK  Manual > Notifications > Chapter: 11.3. A simple example](https://docs.checkmk.com/latest/en/notifications.html#H1:Real)
 * [[Feature-Request] Multiple Alert Profiles](https://github.com/filipnet/checkmk-telegram-notify/issues/3)
 

check_mk_telegram-notify.sh

@@ -26,7 +26,7 @@ else
 fi
 
 # Privacy settings to anonymize/masking IP addresses
-if [ ${NOTIFY_PARAMETER_3} = "privacy" ]; then
+if [[ ${NOTIFY_PARAMETER_3} == "privacy" ]]; then
         # IPv4 IP addresses
         if [ ${NOTIFY_HOST_ADDRESS_4} ]; then
                 slice="${NOTIFY_HOST_ADDRESS_4}"