diff --git a/trainer/train_sft_omni.py b/trainer/train_sft_omni.py
index 612f5e7..1020b54 100644
--- a/trainer/train_sft_omni.py
+++ b/trainer/train_sft_omni.py
@@ -51,7 +51,6 @@ def omni_collate_fn(batch):
 
 def train_epoch(epoch, loader, iters, start_step=0, wandb=None):
     start_time = time.time()
-    last_step = start_step
     for step, (input_ids, labels, audio_labels, audio_inputs, audio_lens, pixel_values, spk_emb) in enumerate(loader, start=start_step + 1):
         input_ids = input_ids.to(args.device)
         labels = labels.to(args.device)
@@ -65,7 +64,6 @@ def train_epoch(epoch, loader, iters, start_step=0, wandb=None):
             else:
                 pixel_values = pixel_values.to(args.device)
         spk_emb = spk_emb.to(args.device)
-        last_step = step
         lr = get_lr(epoch * iters + step, args.epochs * iters, args.learning_rate)
         for param_group in optimizer.param_groups:
             param_group['lr'] = lr
@@ -96,7 +94,7 @@ def train_epoch(epoch, loader, iters, start_step=0, wandb=None):
             loss = (text_loss + audio_loss + res.aux_loss) / args.accumulation_steps
 
         scaler.scale(loss).backward()
-        if step % args.accumulation_steps == 0:
+        if step % args.accumulation_steps == 0 or step == iters:
             scaler.unscale_(optimizer)
             torch.nn.utils.clip_grad_norm_(model.parameters(), args.grad_clip)
             scaler.step(optimizer)
@@ -129,13 +127,6 @@ def train_epoch(epoch, loader, iters, start_step=0, wandb=None):
 
         del input_ids, labels, audio_labels, audio_inputs, audio_lens, pixel_values, spk_emb, res, loss
 
-    if last_step > start_step and last_step % args.accumulation_steps != 0:
-        scaler.unscale_(optimizer)
-        torch.nn.utils.clip_grad_norm_(model.parameters(), args.grad_clip)
-        scaler.step(optimizer)
-        scaler.update()
-        optimizer.zero_grad(set_to_none=True)
-
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="MiniMind-O SFT")