diff --git a/fail2ban/server/server.py b/fail2ban/server/server.py
index e929fe56..6a7a6699 100644
--- a/fail2ban/server/server.py
+++ b/fail2ban/server/server.py
@@ -71,7 +71,7 @@ class Server:
 		logSys.debug("Caught signal %d. Exiting" % signum)
 		self.quit()
 	
-	def __sigUSR1Handler(self, signum, fname):
+	def __sigUSR1handler(self, signum, fname):
 		logSys.debug("Caught signal %d. Flushing logs" % signum)
 		self.flushLogs()