diff --git a/drivers/bus/mhi/pci_generic.c b/drivers/bus/mhi/pci_generic.c
index 74e8fc342cfd2bcfb2d9662cb65eb19d415f14d8..b79895810c52f8fc04d9ab4fcc063a012064d5f0 100644
--- a/drivers/bus/mhi/pci_generic.c
+++ b/drivers/bus/mhi/pci_generic.c
@@ -402,6 +402,7 @@ static const struct mhi_pci_dev_info mhi_mv31_info = {
 	.config = &modem_mv31_config,
 	.bar_num = MHI_PCI_DEFAULT_BAR_NUM,
 	.dma_data_width = 32,
+	.mru_default = 32768,
 };
 
 static const struct mhi_channel_config mhi_sierra_em919x_channels[] = {