diff --git a/smtpd_watcher/smtpd_watcher.py b/smtpd_watcher/smtpd_watcher.py
index 91c4501..af11b9e 100644
--- a/smtpd_watcher/smtpd_watcher.py
+++ b/smtpd_watcher/smtpd_watcher.py
@@ -54,9 +54,10 @@ class SmtpdWatcher:
             capture_output=True,
         )
         self._log.debug(
+            "Stdout: %s. Return code: %s. Stderr: %s",
             result.stdout,
             result.returncode,
-            result.stderr
+            result.stderr,
         )
         ips['postfix'] = result.stdout.split(' ')
         self._log.debug(