diff --git a/include/haproxy/listener-t.h b/include/haproxy/listener-t.h
index 0f6adde..f45c990 100644
--- a/include/haproxy/listener-t.h
+++ b/include/haproxy/listener-t.h
@@ -246,7 +246,7 @@
 		struct eb32_node id;	/* place in the tree of used IDs */
 	} conf;				/* config information */
 
-	struct li_per_thread *per_thr;  /* per-thread fields */
+	struct li_per_thread *per_thr;  /* per-thread fields (one per thread in the group) */
 
 	EXTRA_COUNTERS(extra_counters);
 };
diff --git a/src/listener.c b/src/listener.c
index ad72c8e..d6e58ce 100644
--- a/src/listener.c
+++ b/src/listener.c
@@ -205,19 +205,21 @@
 
 #endif // USE_THREAD
 
-/* Memory allocation and initialization of the per_thr field.
+/* Memory allocation and initialization of the per_thr field (one entry per
+ * bound thread).
  * Returns 0 if the field has been successfully initialized, -1 on failure.
  */
 int li_init_per_thr(struct listener *li)
 {
+	int nbthr = MIN(global.nbthread, MAX_THREADS_PER_GROUP);
 	int i;
 
 	/* allocate per-thread elements for listener */
-	li->per_thr = calloc(global.nbthread, sizeof(*li->per_thr));
+	li->per_thr = calloc(nbthr, sizeof(*li->per_thr));
 	if (!li->per_thr)
 		return -1;
 
-	for (i = 0; i < global.nbthread; ++i) {
+	for (i = 0; i < nbthr; ++i) {
 		MT_LIST_INIT(&li->per_thr[i].quic_accept.list);
 		MT_LIST_INIT(&li->per_thr[i].quic_accept.conns);
 
diff --git a/src/quic_sock.c b/src/quic_sock.c
index d7d4098..196ad38 100644
--- a/src/quic_sock.c
+++ b/src/quic_sock.c
@@ -147,7 +147,7 @@
 struct connection *quic_sock_accept_conn(struct listener *l, int *status)
 {
 	struct quic_conn *qc;
-	struct li_per_thread *lthr = &l->per_thr[tid];
+	struct li_per_thread *lthr = &l->per_thr[ti->ltid];
 
 	qc = MT_LIST_POP(&lthr->quic_accept.conns, struct quic_conn *, accept_list);
 	if (!qc || qc->flags & (QUIC_FL_CONN_CLOSING|QUIC_FL_CONN_DRAINING))
@@ -897,7 +897,7 @@
 void quic_accept_push_qc(struct quic_conn *qc)
 {
 	struct quic_accept_queue *queue = &quic_accept_queues[tid];
-	struct li_per_thread *lthr = &qc->li->per_thr[tid];
+	struct li_per_thread *lthr = &qc->li->per_thr[ti->ltid];
 
 	/* early return if accept is already in progress/done for this
 	 * connection