diff --git a/common/mux/client.go b/common/mux/client.go
index ebf73e09..6c9e90bc 100644
--- a/common/mux/client.go
+++ b/common/mux/client.go
@@ -296,7 +296,7 @@ func (m *ClientWorker) Dispatch(ctx context.Context, link *transport.Link) bool
 	}
 
 	sm := m.sessionManager
-	s := sm.Allocate(m.strategy)
+	s := sm.Allocate(&m.strategy)
 	if s == nil {
 		return false
 	}
diff --git a/common/mux/session.go b/common/mux/session.go
index f5ca30a3..8bcb01bb 100644
--- a/common/mux/session.go
+++ b/common/mux/session.go
@@ -50,11 +50,12 @@ func (m *SessionManager) Count() int {
 	return int(m.count)
 }
 
-func (m *SessionManager) Allocate(Strategy ClientStrategy) *Session {
-	MaxConcurrency := int(Strategy.MaxConcurrency)
-	MaxConnection := uint16(Strategy.MaxConnection)
+func (m *SessionManager) Allocate(Strategy *ClientStrategy) *Session {
 	m.Lock()
 	defer m.Unlock()
+	
+	MaxConcurrency := int(Strategy.MaxConcurrency)
+	MaxConnection := uint16(Strategy.MaxConnection)
 
 	if m.closed || (MaxConcurrency > 0 && len(m.sessions) >= MaxConcurrency) || (MaxConnection > 0 && m.count >= MaxConnection) {
 		return nil
diff --git a/common/mux/session_test.go b/common/mux/session_test.go
index 4c2ec189..a8491a9c 100644
--- a/common/mux/session_test.go
+++ b/common/mux/session_test.go
@@ -9,7 +9,7 @@ import (
 func TestSessionManagerAdd(t *testing.T) {
 	m := NewSessionManager()
 
-	s := m.Allocate(ClientStrategy{})
+	s := m.Allocate(&ClientStrategy{})
 	if s.ID != 1 {
 		t.Error("id: ", s.ID)
 	}
@@ -17,7 +17,7 @@ func TestSessionManagerAdd(t *testing.T) {
 		t.Error("size: ", m.Size())
 	}
 
-	s = m.Allocate(ClientStrategy{})
+	s = m.Allocate(&ClientStrategy{})
 	if s.ID != 2 {
 		t.Error("id: ", s.ID)
 	}
@@ -39,7 +39,7 @@ func TestSessionManagerAdd(t *testing.T) {
 
 func TestSessionManagerClose(t *testing.T) {
 	m := NewSessionManager()
-	s := m.Allocate(ClientStrategy{})
+	s := m.Allocate(&ClientStrategy{})
 
 	if m.CloseIfNoSession() {
 		t.Error("able to close")