diff --git a/iscsi-scst/kernel/isert-scst/iser_rdma.c b/iscsi-scst/kernel/isert-scst/iser_rdma.c
index 3fb80102f..6180ce669 100644
--- a/iscsi-scst/kernel/isert-scst/iser_rdma.c
+++ b/iscsi-scst/kernel/isert-scst/iser_rdma.c
@@ -998,7 +998,7 @@ static struct isert_device *isert_device_create(struct ib_device *ib_dev)
 	isert_dev->cq_desc = vmalloc(sizeof(*isert_dev->cq_desc) *
 				     isert_dev->num_cqs);
 	if (unlikely(isert_dev->cq_desc == NULL)) {
-		PRINT_ERROR("Failed to allocate %ld bytes for iser cq_desc",
+		PRINT_ERROR("Failed to allocate %zd bytes for iser cq_desc",
 			    sizeof(*isert_dev->cq_desc) * isert_dev->num_cqs);
 		err = -ENOMEM;
 		goto fail_alloc_cq_desc;
diff --git a/iscsi-scst/kernel/nthread.c b/iscsi-scst/kernel/nthread.c
index 1692dcbeb..5f0cb8af0 100644
--- a/iscsi-scst/kernel/nthread.c
+++ b/iscsi-scst/kernel/nthread.c
@@ -581,7 +581,7 @@ restart:
 	set_fs(oldfs);
 
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(3, 19, 0)
-	TRACE_DBG("nr_segs %zd, bytes_left %zd, res %d",
+	TRACE_DBG("nr_segs %ld, bytes_left %zd, res %d",
 		  msg->msg_iter.nr_segs, msg->msg_iter.count, res);
 #else
 	TRACE_DBG("msg_iovlen %zd, read_size %d, res %d", msg->msg_iovlen,