diff --git a/python/sglang/srt/managers/scheduler.py b/python/sglang/srt/managers/scheduler.py
index 120d5696e..a62d7fab7 100644
--- a/python/sglang/srt/managers/scheduler.py
+++ b/python/sglang/srt/managers/scheduler.py
@@ -732,8 +732,6 @@ class Scheduler(
         # The last forward batch
         self.last_batch: Optional[ScheduleBatch] = None
         self.forward_ct = 0
-        self.last_prefill_tokens = 0
-        self.last_prefill_cache_tokens = 0
         self.return_health_check_ct = 0
         self.num_retracted_reqs: int = 0
         self.num_paused_reqs: int = 0
diff --git a/python/sglang/srt/managers/scheduler_metrics_mixin.py b/python/sglang/srt/managers/scheduler_metrics_mixin.py
index 96a0020a4..4735e8f5d 100644
--- a/python/sglang/srt/managers/scheduler_metrics_mixin.py
+++ b/python/sglang/srt/managers/scheduler_metrics_mixin.py
@@ -48,6 +48,8 @@ class SchedulerMetricsMixin:
         self.num_generated_tokens = 0
         self.last_decode_stats_tic = time.perf_counter()
         self.last_prefill_stats_tic = time.perf_counter()
+        self.last_prefill_tokens = 0
+        self.last_prefill_cache_tokens = 0
         self.last_gen_throughput: float = 0.0
         self.last_input_throughput: float = 0.0
         self.step_time_dict = defaultdict(list)  # Dict[batch size -> step time]