diff --git a/lenovo/thinkpad/x1/default.nix b/lenovo/thinkpad/x1/default.nix
index 870d9a8..7f4b565 100644
--- a/lenovo/thinkpad/x1/default.nix
+++ b/lenovo/thinkpad/x1/default.nix
@@ -3,4 +3,6 @@
     ../.
     ../../../common/cpu/intel
   ];
+
+  boot.kernelParams = [ "intel_iommu=on" ];
 }