diff --git a/python/sglang/srt/server_args.py b/python/sglang/srt/server_args.py
index d8d6c6dde..f826fd5f2 100644
--- a/python/sglang/srt/server_args.py
+++ b/python/sglang/srt/server_args.py
@@ -1103,7 +1103,7 @@ class ServerArgs:
             list(range(4, 33, 4))
             + list(range(48, 257, 16))
             + list(range(288, 513, 32))
-            + list(range(640, 1024 + 1, 64))
+            + list(range(576, 1024 + 1, 64))
             + list(range(1280, 4096 + 1, 256))
             + list(range(4608, self.piecewise_cuda_graph_max_tokens + 1, 512))
         )