diff --git a/egs/wenetspeech/ASR/pruned_transducer_stateless2/asr_datamodule.py b/egs/wenetspeech/ASR/pruned_transducer_stateless2/asr_datamodule.py
index 200a694d6..10c953e3b 100644
--- a/egs/wenetspeech/ASR/pruned_transducer_stateless2/asr_datamodule.py
+++ b/egs/wenetspeech/ASR/pruned_transducer_stateless2/asr_datamodule.py
@@ -192,13 +192,6 @@ class WenetSpeechAsrDataModule:
             "with training dataset. ",
         )
 
-        group.add_argument(
-            "--lazy-load",
-            type=str2bool,
-            default=True,
-            help="lazily open CutSets to avoid OOM (for L|XL subset)",
-        )
-
         group.add_argument(
             "--training-subset",
             type=str,
@@ -420,17 +413,10 @@ class WenetSpeechAsrDataModule:
     @lru_cache()
     def train_cuts(self) -> CutSet:
         logging.info("About to get train cuts")
-        if self.args.lazy_load:
-            logging.info("use lazy cuts")
-            cuts_train = CutSet.from_jsonl_lazy(
-                self.args.manifest_dir
-                / f"cuts_{self.args.training_subset}.jsonl.gz"
-            )
-        else:
-            cuts_train = CutSet.from_file(
-                self.args.manifest_dir
-                / f"cuts_{self.args.training_subset}.jsonl.gz"
-            )
+        cuts_train = load_manifest_lazy(
+            self.args.manifest_dir
+            / f"cuts_{self.args.training_subset}.jsonl.gz"
+        )
         return cuts_train
 
     @lru_cache()