diff --git a/adapter/adapter.go b/adapter/adapter.go
index 8136827a0..3efc8166f 100644
--- a/adapter/adapter.go
+++ b/adapter/adapter.go
@@ -39,6 +39,11 @@ type Proxy struct {
 	extra   *xsync.MapOf[string, *internalProxyState]
 }
 
+// Adapter implements C.Proxy
+func (p *Proxy) Adapter() C.ProxyAdapter {
+	return p.ProxyAdapter
+}
+
 // AliveForTestUrl implements C.Proxy
 func (p *Proxy) AliveForTestUrl(url string) bool {
 	if state, ok := p.extra.Load(url); ok {
diff --git a/adapter/outboundgroup/util.go b/adapter/outboundgroup/util.go
index 84216377b..66b2510c1 100644
--- a/adapter/outboundgroup/util.go
+++ b/adapter/outboundgroup/util.go
@@ -4,3 +4,7 @@ type SelectAble interface {
 	Set(string) error
 	ForceSet(name string)
 }
+
+var _ SelectAble = (*Fallback)(nil)
+var _ SelectAble = (*URLTest)(nil)
+var _ SelectAble = (*Selector)(nil)
diff --git a/constant/adapters.go b/constant/adapters.go
index cb47f8716..b303eb846 100644
--- a/constant/adapters.go
+++ b/constant/adapters.go
@@ -158,6 +158,7 @@ type DelayHistoryStoreType int
 
 type Proxy interface {
 	ProxyAdapter
+	Adapter() ProxyAdapter
 	AliveForTestUrl(url string) bool
 	DelayHistory() []DelayHistory
 	ExtraDelayHistories() map[string]ProxyState
diff --git a/hub/executor/executor.go b/hub/executor/executor.go
index 66514e39b..214407b47 100644
--- a/hub/executor/executor.go
+++ b/hub/executor/executor.go
@@ -445,12 +445,12 @@ func patchSelectGroup(proxies map[string]C.Proxy) {
 	}
 
 	for name, proxy := range proxies {
-		outbound, ok := proxy.(*adapter.Proxy)
+		outbound, ok := proxy.(C.Proxy)
 		if !ok {
 			continue
 		}
 
-		selector, ok := outbound.ProxyAdapter.(outboundgroup.SelectAble)
+		selector, ok := outbound.Adapter().(outboundgroup.SelectAble)
 		if !ok {
 			continue
 		}
diff --git a/hub/route/groups.go b/hub/route/groups.go
index c4e9501f2..68d1f3542 100644
--- a/hub/route/groups.go
+++ b/hub/route/groups.go
@@ -9,7 +9,6 @@ import (
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/render"
 
-	"github.com/metacubex/mihomo/adapter"
 	"github.com/metacubex/mihomo/adapter/outboundgroup"
 	"github.com/metacubex/mihomo/common/utils"
 	"github.com/metacubex/mihomo/component/profile/cachefile"
@@ -32,7 +31,7 @@ func GroupRouter() http.Handler {
 func getGroups(w http.ResponseWriter, r *http.Request) {
 	var gs []C.Proxy
 	for _, p := range tunnel.Proxies() {
-		if _, ok := p.(*adapter.Proxy).ProxyAdapter.(C.Group); ok {
+		if _, ok := p.Adapter().(C.Group); ok {
 			gs = append(gs, p)
 		}
 	}
@@ -43,7 +42,7 @@ func getGroups(w http.ResponseWriter, r *http.Request) {
 
 func getGroup(w http.ResponseWriter, r *http.Request) {
 	proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
-	if _, ok := proxy.(*adapter.Proxy).ProxyAdapter.(C.Group); ok {
+	if _, ok := proxy.Adapter().(C.Group); ok {
 		render.JSON(w, r, proxy)
 		return
 	}
@@ -53,25 +52,15 @@ func getGroup(w http.ResponseWriter, r *http.Request) {
 
 func getGroupDelay(w http.ResponseWriter, r *http.Request) {
 	proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
-	group, ok := proxy.(*adapter.Proxy).ProxyAdapter.(C.Group)
+	group, ok := proxy.Adapter().(C.Group)
 	if !ok {
 		render.Status(r, http.StatusNotFound)
 		render.JSON(w, r, ErrNotFound)
 		return
 	}
 
-	switch proxy.(*adapter.Proxy).Type() {
-	case C.URLTest:
-		if urlTestGroup, ok := proxy.(*adapter.Proxy).ProxyAdapter.(*outboundgroup.URLTest); ok {
-			urlTestGroup.ForceSet("")
-		}
-	case C.Fallback:
-		if fallbackGroup, ok := proxy.(*adapter.Proxy).ProxyAdapter.(*outboundgroup.Fallback); ok {
-			fallbackGroup.ForceSet("")
-		}
-	}
-
-	if proxy.(*adapter.Proxy).Type() != C.Selector {
+	if selectAble, ok := proxy.Adapter().(outboundgroup.SelectAble); ok && proxy.Type() != C.Selector {
+		selectAble.ForceSet("")
 		cachefile.Cache().SetSelected(proxy.Name(), "")
 	}
 
diff --git a/hub/route/proxies.go b/hub/route/proxies.go
index 9ff27c2dd..ba4e03f90 100644
--- a/hub/route/proxies.go
+++ b/hub/route/proxies.go
@@ -7,7 +7,6 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/metacubex/mihomo/adapter"
 	"github.com/metacubex/mihomo/adapter/outboundgroup"
 	"github.com/metacubex/mihomo/common/utils"
 	"github.com/metacubex/mihomo/component/profile/cachefile"
@@ -82,8 +81,8 @@ func updateProxy(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	proxy := r.Context().Value(CtxKeyProxy).(*adapter.Proxy)
-	selector, ok := proxy.ProxyAdapter.(outboundgroup.SelectAble)
+	proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
+	selector, ok := proxy.Adapter().(outboundgroup.SelectAble)
 	if !ok {
 		render.Status(r, http.StatusBadRequest)
 		render.JSON(w, r, newError("Must be a Selector"))
@@ -150,24 +149,12 @@ func getProxyDelay(w http.ResponseWriter, r *http.Request) {
 
 func unfixedProxy(w http.ResponseWriter, r *http.Request) {
 	proxy := r.Context().Value(CtxKeyProxy).(C.Proxy)
-	switch proxy.(*adapter.Proxy).Type() {
-	case C.URLTest:
-		if urlTestGroup, ok := proxy.(*adapter.Proxy).ProxyAdapter.(*outboundgroup.URLTest); ok {
-			urlTestGroup.ForceSet("")
-		}
-	case C.Fallback:
-		if fallbackGroup, ok := proxy.(*adapter.Proxy).ProxyAdapter.(*outboundgroup.Fallback); ok {
-			fallbackGroup.ForceSet("")
-		}
-	default:
-		render.Status(r, http.StatusBadRequest)
-		render.JSON(w, r, ErrBadRequest)
-		return
-	}
-
-	if proxy.(*adapter.Proxy).Type() != C.Selector {
+	if selectAble, ok := proxy.Adapter().(outboundgroup.SelectAble); ok && proxy.Type() != C.Selector {
+		selectAble.ForceSet("")
 		cachefile.Cache().SetSelected(proxy.Name(), "")
+		render.NoContent(w, r)
+		return
 	}
-
-	render.NoContent(w, r)
+	render.Status(r, http.StatusBadRequest)
+	render.JSON(w, r, ErrBadRequest)
 }