diff --git a/lib/ioat/ioat.c b/lib/ioat/ioat.c
index 065d14275..ef7c215a6 100644
--- a/lib/ioat/ioat.c
+++ b/lib/ioat/ioat.c
@@ -673,6 +673,7 @@ spdk_ioat_submit_fill(struct spdk_ioat_chan *ioat, void *cb_arg, spdk_ioat_req_c
 
 	while (remaining) {
 		op_size = remaining;
+		op_size = spdk_min(op_size, (0x200000 - _2MB_OFFSET(vdst)));
 		op_size = spdk_min(op_size, ioat->max_xfer_size);
 		remaining -= op_size;