diff --git a/python/sglang/srt/speculative/ngram_info.py b/python/sglang/srt/speculative/ngram_info.py
index 6be65770c..b0a5c8d99 100644
--- a/python/sglang/srt/speculative/ngram_info.py
+++ b/python/sglang/srt/speculative/ngram_info.py
@@ -419,6 +419,9 @@ class NgramVerifyInput(SpecInput):
             self._greedy_verify(batch, logits_output)
         else:
             # NOTE: Compared with greedy_verify, the performance of _sampling_verify is relatively poor.
+            logger.warning(
+                "Currently Ngram speculative sampling forces to use greedy verification."
+            )
             self._greedy_verify(batch, logits_output)
             # self._sampling_verify(batch, logits_output, sampling_info)