diff --git a/debian/resources/fail2ban/auth-challenge-ip.conf b/debian/resources/fail2ban/auth-challenge-ip.conf
index 23eac0c..f76a55a 100644
--- a/debian/resources/fail2ban/auth-challenge-ip.conf
+++ b/debian/resources/fail2ban/auth-challenge-ip.conf
@@ -11,7 +11,7 @@
 # Values:  TEXT
 #
 #[WARNING] sofia_reg.c:1792 SIP auth challenge (INVITE) on sofia profile 'internal' for [+972592277524@xxx.xxx.xxx.xxx] from ip 209.160.120.12 
-failregex = \[WARNING\] sofia_reg.c:\d+ SIP auth challenge \((INVITE|REGISTER)\) on sofia profile \'\w+\' for \[.*@\d+.\d+.\d+.\d+\] from ip <HOST>
+failregex = \[WARNING\] sofia_reg.c:\d+ SIP auth challenge \((INVITE|REGISTER)\) on sofia profile \'\.*\' for \[.*@\d+.\d+.\d+.\d+\] from ip <HOST>
 
 
 # Option:  ignoreregex