diff --git a/etc/default/grub.d/40_enable_iommu.cfg b/etc/default/grub.d/40_enable_iommu.cfg
index 67ea0f1..10c732f 100644
--- a/etc/default/grub.d/40_enable_iommu.cfg
+++ b/etc/default/grub.d/40_enable_iommu.cfg
@@ -14,4 +14,4 @@ GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX efi=disable_early_pci_dma"
 ## Enables strict enforcement of IOMMU TLB invalidation so devices will never be able to access stale data contents
 ## https://github.com/torvalds/linux/blob/master/drivers/iommu/Kconfig#L97
 ## Page 11 of https://lenovopress.lenovo.com/lp1467.pdf
-GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX iommu=strict iommu.passthrough=0 iommu.strict=1"
+GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX iommu=force iommu.passthrough=0 iommu.strict=1"