diff --git a/core/src/main/golang/bridge/proxies.go b/core/src/main/golang/bridge/proxies.go
index b0a5d57..0d1b729 100644
--- a/core/src/main/golang/bridge/proxies.go
+++ b/core/src/main/golang/bridge/proxies.go
@@ -106,20 +106,24 @@ func QueryAllProxyGroups(collection ProxyGroupCollection) {
 func SetSelectedProxy(name, proxy string) bool {
 	p := tunnel.Proxies()[name]
 	if p == nil {
+		log.Infoln("Set %s: Not such proxy group", name)
 		return false
 	}
 
 	pb, ok := p.(*outbound.Proxy)
 	if !ok {
+		log.Infoln("Set %s: Not a proxy object", name)
 		return false
 	}
 
 	selector, ok := pb.ProxyAdapter.(*outboundgroup.Selector)
 	if !ok {
+		log.Infoln("Set %s: Not a selector group", name)
 		return false
 	}
 
 	if err := selector.Set(proxy); err != nil {
+		log.Infoln("Set %s: %s", name, err.Error())
 		return false
 	}
 
diff --git a/core/src/main/golang/tun/log.go b/core/src/main/golang/tun/log.go
index 6a750e8..7eafb1b 100644
--- a/core/src/main/golang/tun/log.go
+++ b/core/src/main/golang/tun/log.go
@@ -5,17 +5,17 @@ import "github.com/Dreamacro/clash/log"
 type ClashLogger struct{}
 
 func (c *ClashLogger) D(format string, args ...interface{}) {
-	log.Debugln(format, args)
+	log.Debugln(format, args...)
 }
 
 func (c *ClashLogger) I(format string, args ...interface{}) {
-	log.Infoln(format, args)
+	log.Infoln(format, args...)
 }
 
 func (c *ClashLogger) W(format string, args ...interface{}) {
-	log.Warnln(format, args)
+	log.Warnln(format, args...)
 }
 
 func (c *ClashLogger) E(format string, args ...interface{}) {
-	log.Errorln(format, args)
+	log.Errorln(format, args...)
 }