diff --git a/python/sglang/srt/disaggregation/prefill.py b/python/sglang/srt/disaggregation/prefill.py
index 36f44bb10..a42cbe771 100644
--- a/python/sglang/srt/disaggregation/prefill.py
+++ b/python/sglang/srt/disaggregation/prefill.py
@@ -535,7 +535,7 @@ class SchedulerDisaggregationPrefillMixin:
 
         self.maybe_send_health_check_signal()
 
-        if self.current_scheduler_metrics_enabled:
+        if self.current_scheduler_metrics_enabled and batch.prefill_stats is not None:
             can_run_cuda_graph = getattr(result, "can_run_cuda_graph", False)
             self.log_prefill_stats(
                 prefill_stats=batch.prefill_stats,