diff --git a/lib/iscsi/iscsi.c b/lib/iscsi/iscsi.c
index e2912ebaae..35bb4e9569 100644
--- a/lib/iscsi/iscsi.c
+++ b/lib/iscsi/iscsi.c
@@ -4571,7 +4571,10 @@ remove_acked_pdu(struct spdk_iscsi_conn *conn, uint32_t ExpStatSN)
 		stat_sn = from_be32(&pdu->bhs.stat_sn);
 		if (SN32_LT(stat_sn, conn->exp_statsn)) {
 			TAILQ_REMOVE(&conn->snack_pdu_list, pdu, tailq);
-			spdk_iscsi_conn_free_pdu(conn, pdu);
+			if (pdu->task) {
+				spdk_iscsi_task_put(pdu->task);
+			}
+			spdk_put_pdu(pdu);
 		}
 	}
 }