diff --git a/client/src/components/Filters/UserRules.js b/client/src/components/Filters/UserRules.js
index c748c3bc..bfd87b89 100644
--- a/client/src/components/Filters/UserRules.js
+++ b/client/src/components/Filters/UserRules.js
@@ -44,7 +44,7 @@ export default class UserRules extends Component {
                             domain and all its subdomains
                         </li>
                         <li>
-                            <code>example.org 127.0.0.1</code> - AdGuard DNS will now return
+                            <code>127.0.0.1 example.org</code> - AdGuard DNS will now return
                             127.0.0.1 address for the example.org domain (but not its subdomains).
                         </li>
                         <li>
diff --git a/control.go b/control.go
index 45b339af..340f8479 100644
--- a/control.go
+++ b/control.go
@@ -1148,7 +1148,7 @@ func (filter *filter) update(now time.Time) (bool, error) {
 	d := dnsfilter.New()
 	for _, line := range lines {
 		line = strings.TrimSpace(line)
-		if line[0] == '!' {
+		if len(line) > 0 && line[0] == '!' {
 			if m := filterTitle.FindAllStringSubmatch(line, -1); len(m) > 0 && len(m[0]) >= 2 && !seenTitle {
 				log.Printf("Setting filter title to %s\n", m[0][1])
 				filter.Name = m[0][1]
diff --git a/coredns_plugin/coredns_plugin.go b/coredns_plugin/coredns_plugin.go
index 78c9bb9a..0000156c 100644
--- a/coredns_plugin/coredns_plugin.go
+++ b/coredns_plugin/coredns_plugin.go
@@ -384,7 +384,8 @@ func (p *plug) serveDNSInternal(ctx context.Context, w dns.ResponseWriter, r *dn
 		// is it in hosts?
 		if val, ok := p.hosts[host]; ok {
 			// it is, if it's a loopback host, reply with NXDOMAIN
-			if val.IsLoopback() {
+			// TODO: research if it's better than 127.0.0.1
+			if false && val.IsLoopback() {
 				rcode, err := writeNXdomain(ctx, w, r)
 				if err != nil {
 					return rcode, dnsfilter.Result{}, err
diff --git a/helpers.go b/helpers.go
index a7e60f77..f28b9ea7 100644
--- a/helpers.go
+++ b/helpers.go
@@ -3,6 +3,7 @@ package main
 import (
 	"bufio"
 	"errors"
+	"fmt"
 	"io"
 	"net/http"
 	"path"
@@ -246,3 +247,17 @@ func _Func() string {
 	f := runtime.FuncForPC(pc[0])
 	return path.Base(f.Name())
 }
+
+func trace(format string, args ...interface{}) {
+	pc := make([]uintptr, 10) // at least 1 entry needed
+	runtime.Callers(2, pc)
+	f := runtime.FuncForPC(pc[0])
+	var buf strings.Builder
+	buf.WriteString(fmt.Sprintf("%s(): ", path.Base(f.Name())))
+	text := fmt.Sprintf(format, args...)
+	buf.WriteString(text)
+	if len(text) == 0 || text[len(text)-1] != '\n' {
+		buf.WriteRune('\n')
+	}
+	fmt.Print(buf.String())
+}