diff --git a/config/filter.d/3proxy.conf b/config/filter.d/3proxy.conf
index 09855d75..c341cf80 100644
--- a/config/filter.d/3proxy.conf
+++ b/config/filter.d/3proxy.conf
@@ -8,10 +8,11 @@
 [Definition]
 
 # Option:  failregex
-# Notes.:  http://www.3proxy.ru/howtoe.asp#ERRORS that 1-9 are all authentication problems (%E field)
+# Notes.:  http://www.3proxy.ru/howtoe.asp#ERRORS indicates that 01-09 are
+#          all authentication problems (%E field)
 #          Log format is: "L%d-%m-%Y %H:%M:%S %z %N.%p %E %U %C:%c %R:%r %O %I %h %T"
 # Values:  TEXT
 #
-failregex = ^\s[+-][0-9]{4} \S+ 0000[1-9] \S+ <HOST>:[0-9]+ [0-9.]+:[0-9]+ [0-9]+ .*$
+failregex = ^\s[+-]\d{4} \S+ \d{3}0[1-9] \S+ <HOST>:\d+ [0-9.]+:\d+ \d+
 
 ignoreregex =