diff --git a/slime/backends/megatron_utils/data.py b/slime/backends/megatron_utils/data.py
index 2a0b0123b..c6cf0c3eb 100644
--- a/slime/backends/megatron_utils/data.py
+++ b/slime/backends/megatron_utils/data.py
@@ -298,7 +298,7 @@ def _generate_data_iterator(rollout_data, micro_batch_size, micro_batch_indices=
         dist.all_reduce(num_microbatches, op=dist.ReduceOp.MAX, group=dp_group)
 
         if vpp_size > 1:
-            # vpp requies the number of microbatches to be divisible by vpp_size
+            # vpp requires the number of microbatches to be divisible by vpp_size
             num_microbatches = torch.clamp(
                 num_microbatches // microbatch_group_size_per_vp_stage * microbatch_group_size_per_vp_stage,
                 min=1,