diff --git a/adlist_hosts.go b/adlist_hosts.go
index 44996cc..1f33e50 100644
--- a/adlist_hosts.go
+++ b/adlist_hosts.go
@@ -107,6 +107,9 @@ func downloadDoubleThread() {
 			}
 			s := fileByLines(ZabovDoubleBL)
 			for _, v := range s {
+				if len(v) == 0 || strings.TrimSpace(v)[0] == '#' {
+					continue
+				}
 				configs := _urls[v]
 				if configs == nil {
 					configs = stringarray{}
diff --git a/adlist_single.go b/adlist_single.go
index aeeffbf..4e69c42 100644
--- a/adlist_single.go
+++ b/adlist_single.go
@@ -108,6 +108,9 @@ func downloadThread() {
 
 			s := fileByLines(ZabovSingleBL)
 			for _, v := range s {
+				if len(v) == 0 || strings.TrimSpace(v)[0] == '#' {
+					continue
+				}
 				configs := _urls[v]
 				if configs == nil {
 					configs = stringarray{}
diff --git a/hostfile.go b/hostfile.go
index c64cb98..63def50 100644
--- a/hostfile.go
+++ b/hostfile.go
@@ -4,6 +4,7 @@ import (
 	"bufio"
 	"fmt"
 	"os"
+	"strings"
 )
 
 func init() {
@@ -41,6 +42,9 @@ func ingestLocalBlacklists() {
 		scanner := bufio.NewScanner(file)
 		for scanner.Scan() {
 			d := scanner.Text()
+			if len(d) == 0 || strings.TrimSpace(d)[0] == '#' {
+				continue
+			}
 			DomainKill(d, ZabovHostsFile, configs)
 			incrementStats("Blacklist", 1)