diff --git a/handler/dnspod_handler.go b/handler/dnspod_handler.go
index cc96816..98fa337 100644
--- a/handler/dnspod_handler.go
+++ b/handler/dnspod_handler.go
@@ -70,7 +70,7 @@ func (handler *DNSPodHandler) DomainLoop(domain *godns.Domain, panicChan chan<-
 				}
 
 				// Continue to check the IP of sub-domain
-				if len(ip) > 0 && !strings.Contains(currentIP, ip) {
+				if len(ip) > 0 && strings.TrimRight(currentIP, "\n") != strings.TrimRight(ip, "\n") {
 					log.Printf("%s.%s Start to update record IP...\n", subDomain, domain.DomainName)
 					handler.UpdateIP(domainID, subDomainID, subDomain, currentIP)
 
diff --git a/handler/he_handler.go b/handler/he_handler.go
index d11a2ab..2ac9b13 100644
--- a/handler/he_handler.go
+++ b/handler/he_handler.go
@@ -51,7 +51,7 @@ func (handler *HEHandler) DomainLoop(domain *godns.Domain, panicChan chan<- godn
 		//Compare currentIP with saved IP
 		savedIP := godns.LoadCurrentIP()
 
-		if savedIP != "" && currentIP == savedIP {
+		if savedIP != "" && strings.TrimRight(currentIP, "\n") == strings.TrimRight(savedIP, "\n") {
 			log.Printf("Current IP is not changed, no need to update...")
 		} else {
 			godns.SaveCurrentIP(currentIP)