diff --git a/include/haproxy/xprt_quic.h b/include/haproxy/xprt_quic.h
index 967a43d..ce65e8b 100644
--- a/include/haproxy/xprt_quic.h
+++ b/include/haproxy/xprt_quic.h
@@ -1149,6 +1149,9 @@
 		LIST_DELETE(&pkt->qc_rx_pkt_list);
 		pool_free(pool_head_quic_rx_packet, pkt);
 	}
+
+	/* In frequent cases the buffer will be emptied at this stage. */
+	b_realign_if_empty(&qc->rx.buf);
 }
 
 /* Increment the reference counter of <pkt> */