diff --git a/python/sglang/srt/server_args.py b/python/sglang/srt/server_args.py
index 84c92983e..baa08d4af 100644
--- a/python/sglang/srt/server_args.py
+++ b/python/sglang/srt/server_args.py
@@ -679,7 +679,7 @@ class ServerArgs:
                 [1, 2, 4, 8, 12]
                 + list(range(16, 257, 8))
                 + list(range(272, 512, 16))
-                + list(range(512, self.cuda_graph_max_bs + 1))
+                + list(range(512, self.cuda_graph_max_bs + 1, 32))
             )
         else:
             # Spec decoding case: list(range(1, 9, 1)) + list(range(10, 33, 2)) + list(range(40, 64, 4)) + list(range(72, 257, 8))
diff --git a/python/sglang/srt/speculative/cpp_ngram/ngram.cpp b/python/sglang/srt/speculative/cpp_ngram/ngram.cpp
index 51172c5dd..d1e982358 100644
--- a/python/sglang/srt/speculative/cpp_ngram/ngram.cpp
+++ b/python/sglang/srt/speculative/cpp_ngram/ngram.cpp
@@ -1,6 +1,9 @@
 #include "ngram.h"
 
+#include <algorithm>
+#include <cstring>
 #include <limits>
+#include <queue>
 #include <vector>
 
 namespace ngram {