diff --git a/config/filter.d/nginx-limit-req.conf b/config/filter.d/nginx-limit-req.conf
index eb804798..589d3d78 100644
--- a/config/filter.d/nginx-limit-req.conf
+++ b/config/filter.d/nginx-limit-req.conf
@@ -33,7 +33,13 @@
 #
 ngx_limit_req_zones = [^"]+
 
-failregex = ^\s*\[error\] \d+#\d+: \*\d+ limiting requests, excess: [\d\.]+ by zone "(?:%(ngx_limit_req_zones)s)", client: <HOST>, server: \S*, request: "\S+ \S+ HTTP/\d+\.\d+", host: "\S+"(, referrer: "\S+")?\s*$
+# Use following full expression if you should range limit request to specified 
+# servers, requests, referrers etc. only :
+#
+# failregex = ^\s*\[error\] \d+#\d+: \*\d+ limiting requests, excess: [\d\.]+ by zone "(?:%(ngx_limit_req_zones)s)", client: <HOST>, server: \S*, request: "\S+ \S+ HTTP/\d+\.\d+", host: "\S+"(, referrer: "\S+")?\s*$
+
+# Shortly, much faster and stable version of regexp:
+failregex = ^\s*\[error\] \d+#\d+: \*\d+ limiting requests, excess: [\d\.]+ by zone "(?:%(ngx_limit_req_zones)s)", client: <HOST>
 
 ignoreregex =