diff --git a/README.md b/README.md
index 2133a7fe1554b0a666bc847b7f76dc94b1d6d581..1b6da494dcc45f207e5fcdca6d18d12d6fe39671 100644
--- a/README.md
+++ b/README.md
@@ -16,12 +16,12 @@ adds the following options:
 
 **Note: Source address and source interface uses the "shell=True" option in in the "subprocess.Popen" command. This is insecure, so be careful.**
 
-To disable this options you need to comment out the line `shell = True` in [~/lib/nagios/plugins/check_traceroute](https://thl-cmk.hopto.org/gitlab/checkmk/vendor-independent/active_check_traceroute/-/blob/master/lib/nagios/plugins/check_traceroute) like this.
+To enable this options you need to uncomment the line `# shell = True` in [~/lib/nagios/plugins/check_traceroute](https://thl-cmk.hopto.org/gitlab/checkmk/vendor-independent/active_check_traceroute/-/blob/master/lib/nagios/plugins/check_traceroute) like this.
 
 ```
     if (source_int is not None) or (source_addr is not None):
         cmd = ' '.join(cmd)
-        # shell = True
+        shell = True
 
 ```