diff --git a/conf/distro/netmodule-linux-ostree.conf b/conf/distro/netmodule-linux-ostree.conf
index d1b11df..2828cce 100644
--- a/conf/distro/netmodule-linux-ostree.conf
+++ b/conf/distro/netmodule-linux-ostree.conf
@@ -12,9 +12,8 @@ KERNEL_IMAGETYPES_sota = "fitImage"
 KERNEL_IMAGETYPE_sota = "fitImage"
 OSTREE_KERNEL = "${KERNEL_IMAGETYPE}-${INITRAMFS_IMAGE}-${MACHINE}-${MACHINE}"
 
-INITRAMFS_PACKAGES = "wireless-regdb-static \
-                      linux-firmware-wl12xx \
-                      linux-firmware-wl18xx \
-                      wlconf-bin \
-                      "
-ROOTFS_BOOTSTRAP_INSTALL_append = " ${INITRAMFS_PACKAGES}"
+ROOTFS_BOOTSTRAP_INSTALL_append_am335x-nmhw21 = " wireless-regdb-static \
+                                                  linux-firmware-wl12xx \
+                                                  linux-firmware-wl18xx \
+                                                  wlconf-bin \
+                                                  "