diff --git a/servers/websocket/client_manager.go b/servers/websocket/client_manager.go
index 2c52d1d..75a1694 100644
--- a/servers/websocket/client_manager.go
+++ b/servers/websocket/client_manager.go
@@ -138,7 +138,7 @@ func (manager *ClientManager) DelUsers(client *Client) (result bool) {
 
 // GetUserKeys 获取用户的key
 func (manager *ClientManager) GetUserKeys() (userKeys []string) {
-	userKeys = make([]string, len(manager.Users))
+	userKeys = make([]string, 0, len(manager.Users))
 	for key := range manager.Users {
 		userKeys = append(userKeys, key)
 	}