diff --git a/package/base-files/files/bin/board_detect b/package/base-files/files/bin/board_detect
index f9640f0388..441db6a08f 100755
--- a/package/base-files/files/bin/board_detect
+++ b/package/base-files/files/bin/board_detect
@@ -4,11 +4,11 @@ CFG=$1
 
 [ -n "$CFG" ] || CFG=/etc/board.json
 
-[ -d "/etc/board.d/" -a ! -f "$CFG" ] && {
+[ -d "/etc/board.d/" -a ! -s "$CFG" ] && {
 	for a in `ls /etc/board.d/*`; do
 		[ -x $a ] || continue;
 		$(. $a)
 	done
 }
 
-[ -f "$CFG" ] || return 1
+[ -s "$CFG" ] || return 1
diff --git a/package/base-files/files/bin/config_generate b/package/base-files/files/bin/config_generate
index 80ed61b9e2..80e5c9f474 100755
--- a/package/base-files/files/bin/config_generate
+++ b/package/base-files/files/bin/config_generate
@@ -4,8 +4,8 @@ CFG=/etc/board.json
 
 . /usr/share/libubox/jshn.sh
 
-[ -f $CFG ] || /bin/board_detect || exit 1
-[ -f /etc/config/network -a -f /etc/config/system ] && exit 0
+[ -s $CFG ] || /bin/board_detect || exit 1
+[ -s /etc/config/network -a -s /etc/config/system ] && exit 0
 
 generate_static_network() {
 	uci -q batch <<-EOF
@@ -401,7 +401,7 @@ generate_gpioswitch() {
 json_init
 json_load "$(cat ${CFG})"
 
-if [ ! -f /etc/config/network ]; then
+if [ ! -s /etc/config/network ]; then
 	touch /etc/config/network
 	generate_static_network
 
@@ -412,7 +412,7 @@ if [ ! -f /etc/config/network ]; then
 	for key in $keys; do generate_switch $key; done
 fi
 
-if [ ! -f /etc/config/system ]; then
+if [ ! -s /etc/config/system ]; then
 	touch /etc/config/system
 	generate_static_system