diff --git a/src/megatron/bridge/recipes/qwen_vl/qwen35_vl.py b/src/megatron/bridge/recipes/qwen_vl/qwen35_vl.py
index 8c9ef45d8c..4bfa6dcc14 100644
--- a/src/megatron/bridge/recipes/qwen_vl/qwen35_vl.py
+++ b/src/megatron/bridge/recipes/qwen_vl/qwen35_vl.py
@@ -125,10 +125,7 @@ def _qwen35_vl_apply_common(
     # Dataset configuration
     cfg.dataset.seq_length = 4096
     cfg.dataset.hf_processor_path = hf_path
-    # Enable THD packing by default for SFT/PEFT: the step function builds
-    # cu_seqlens so attention skips padding FLOPs on short samples (especially
-    # when PP/EP forces micro-batches to pad to seq_length).
-    cfg.dataset.pack_sequences_in_batch = True
+    cfg.dataset.pack_sequences_in_batch = False
 
     # DDP settings
     cfg.ddp.overlap_grad_reduce = False