diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
index 84c716694b..65f4bd4417 100644
--- a/package/base-files/files/lib/upgrade/common.sh
+++ b/package/base-files/files/lib/upgrade/common.sh
@@ -260,16 +260,6 @@ get_partitions() { # <device> <filename>
 	fi
 }
 
-jffs2_copy_config() {
-	if grep rootfs_data /proc/mtd >/dev/null; then
-		# squashfs+jffs2
-		mtd -e rootfs_data jffs2write "$CONF_TAR" rootfs_data
-	else
-		# jffs2
-		mtd jffs2write "$CONF_TAR" rootfs
-	fi
-}
-
 indicate_upgrade() {
 	. /etc/diag.sh
 	set_state upgrade