diff --git a/fail2ban/client/fail2bancmdline.py b/fail2ban/client/fail2bancmdline.py
index 4cb1927e..a14a1cf4 100644
--- a/fail2ban/client/fail2bancmdline.py
+++ b/fail2ban/client/fail2bancmdline.py
@@ -270,6 +270,10 @@ class Fail2banCmdLine():
 	@staticmethod
 	def exit(code=0):
 		logSys.debug("Exit with code %s", code)
+		# because of possible buffered output in python, we should flush it before exit:
+		sys.stdout.flush()
+		sys.stderr.flush()
+		# exit
 		Fail2banCmdLine._exit(code)