diff --git a/python/sglang/srt/server_args.py b/python/sglang/srt/server_args.py
index 82e588d1c..757f2bcb7 100644
--- a/python/sglang/srt/server_args.py
+++ b/python/sglang/srt/server_args.py
@@ -629,8 +629,8 @@ class PortArgs:
     # The port for nccl initialization for multiple TP groups (torch.dist)
     nccl_ports: List[int]
 
-    @classmethod
-    def init_new(self, server_args):
+    @staticmethod
+    def init_new(server_args) -> "PortArgs":
         port = server_args.port + 1
         while True:
             if is_port_available(port):