diff --git a/smtpd_watcher/smtpd_watcher.py b/smtpd_watcher/smtpd_watcher.py
index f593443..d690a18 100644
--- a/smtpd_watcher/smtpd_watcher.py
+++ b/smtpd_watcher/smtpd_watcher.py
@@ -66,12 +66,12 @@ class SmtpdWatcher:
             ips['postfix']
         )
         result = subprocess.run(
-            ['/usr/bin/fail2ban-client', 'get', 'postfix-sasl', 'banned', '|', 'tr', '-d', '"][\',"'],
+            ['/usr/bin/fail2ban-client', 'get', 'postfix-sasl', 'banned'],
             encoding='utf-8',
             check=True,
             capture_output=True,
         )
-        ips['postfix-sasl'] = result.stdout.split(' ')
+        ips['postfix-sasl'] = result.stdout.replace("'", '').replace(',', '').replace(']', '').replace('[', '').split(' ')
         self._log.debug(
             "Banned IPs in postfix-sasl jail: %s",
             ips['postfix-sasl']