diff --git a/vllm/distributed/kv_transfer/kv_connector/v1/offloading/scheduler.py b/vllm/distributed/kv_transfer/kv_connector/v1/offloading/scheduler.py
index 5e98c1266e20..3ae65dc523e9 100644
--- a/vllm/distributed/kv_transfer/kv_connector/v1/offloading/scheduler.py
+++ b/vllm/distributed/kv_transfer/kv_connector/v1/offloading/scheduler.py
@@ -438,7 +438,10 @@ def _generate_job_id(self) -> int:
         return job_id
 
     def _remove_pending_job(self, job_id: int, block_ids: list[int] | None) -> None:
-        for bid in block_ids or ():
+        # Lockstep MLA groups share physical block IDs, so a transfer job may
+        # contain the same ID once per logical group. The pending-job index is
+        # set-backed and therefore registers each (block, job) pair only once.
+        for bid in set(block_ids or ()):
             pending = self._block_id_to_pending_jobs[bid]
             pending.remove(job_id)
             if not pending: