diff --git a/lenovo/thinkpad/l14/amd/default.nix b/lenovo/thinkpad/l14/amd/default.nix
index bf475f73..d2803e2f 100644
--- a/lenovo/thinkpad/l14/amd/default.nix
+++ b/lenovo/thinkpad/l14/amd/default.nix
@@ -12,10 +12,13 @@
     # either crashes or is not able to attach to the GPU depending on
     # the kernel version. I've seen no issues with the IOMMU disabled.
     #
-    # BIOS version 1.13 claims to fix IOMMU issues, but we leave the
-    # IOMMU off to avoid a sad experience for those people that drew
+    # BIOS version 1.13 fixes the IOMMU issues, but we leave the IOMMU
+    # in software mode to avoid a sad experience for those people that drew
     # the short straw when they bought their laptop.
-    "iommu=off"
+    #
+    # Do not set iommu=off, because this will cause the SD-Card reader
+    # driver to kernel panic.
+    "iommu=soft"
   ];
 
   # As of writing this, Linux 5.8 is the oldest kernel that is still