diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index beb0e3443209..7d74f7b119ca 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -6718,8 +6718,8 @@ static const struct btf_kfunc_id_set scx_kfunc_set_enqueue_dispatch = {
 static bool scx_dsq_move(struct bpf_iter_scx_dsq_kern *kit,
 			 struct task_struct *p, u64 dsq_id, u64 enq_flags)
 {
-	struct scx_sched *sch = scx_root;
 	struct scx_dispatch_q *src_dsq = kit->dsq, *dst_dsq;
+	struct scx_sched *sch = src_dsq->sched;
 	struct rq *this_rq, *src_rq, *locked_rq;
 	bool dispatched = false;
 	bool in_balance;
@@ -6736,6 +6736,11 @@ static bool scx_dsq_move(struct bpf_iter_scx_dsq_kern *kit,
 	if (unlikely(READ_ONCE(scx_aborting)))
 		return false;
 
+	if (unlikely(!scx_task_on_sched(sch, p))) {
+		scx_error(sch, "scx_bpf_dsq_move[_vtime]() on %s[%d] but the task belongs to a different scheduler",
+			  p->comm, p->pid);
+	}
+
 	/*
 	 * Can be called from either ops.dispatch() locking this_rq() or any
 	 * context where no rq lock is held. If latter, lock @p's task_rq which