diff --git a/build_image b/build_image
index 3783351ea8..8e293c8b97 100755
--- a/build_image
+++ b/build_image
@@ -137,11 +137,11 @@ if [ ${FLAGS_factory_install} -eq ${FLAGS_TRUE} ]; then
 
   # Factory install needs to have the factory installer added.
   EXTRA_PACKAGES="${EXTRA_PACKAGES} chromeos-base/chromeos-factoryinstall"
-  # On x86, we boot the factory install shim from an SD card using
-  # initramfs for our root.  On ARM, we boot the factory install shim
-  # over the network, so we don't require initramfs, but we do require
-  # fbconsole to fix a display driver bug.
-  if [ "${ARCH}" = "x86" ] ; then
+  # On x86/amd64, we boot the factory install shim from an SD card using
+  # initramfs for our root.  On ARM, we boot the factory install shim over the
+  # network, so we don't require initramfs, but we do require fbconsole to fix
+  # a display driver bug.
+  if [ "${ARCH}" = "x86" -o "${ARCH}" = "amd64" ] ; then
     export USE="${USE} initramfs"
   fi
   # CONFIG_BLK_DEV_RAM is disabled by default.