diff --git a/python/sglang/srt/speculative/ngram_worker.py b/python/sglang/srt/speculative/ngram_worker.py
index c896d6d0a..82aa4a187 100644
--- a/python/sglang/srt/speculative/ngram_worker.py
+++ b/python/sglang/srt/speculative/ngram_worker.py
@@ -328,8 +328,9 @@ class NGRAMWorker:
                     )
                     req.time_stats.set_spec_verify_end_time(accepted_tokens=accepted)
 
-            # Store accept_lens for per-request metrics
-            accept_lens = verify_input.num_accepted_drafts
+            # Store accept_lens (with bonus) for per-request metrics; downstream
+            # subtracts 1 to recover drafts-only counts.
+            accept_lens = verify_input.num_accepted_tokens
             if batch.return_logprob:
                 add_output_logprobs_for_spec_v1(batch, verify_input, logits_output)
             self._update_ngram_corpus(batch)