diff --git a/apps/mixbox/bin/mbdb b/apps/mixbox/bin/mbdb
index 0b3c13b..8f79aea 100644
--- a/apps/mixbox/bin/mbdb
+++ b/apps/mixbox/bin/mbdb
@@ -28,10 +28,10 @@ case "$method" in
 		uci -q del ${appname}.${uciname}.${key}
 	;;
 	keys)
-		uci -q show ${appname}.${uciname} | sed 1d | sed -e "s/${appname}.${uciname}.//g" | awk -F '=' '{print$1}'
+		uci -q get ${appname}.${uciname} &> /dev/null && uci -q show ${appname}.${uciname} | sed 1d | sed -e "s/${appname}.${uciname}.//g" | awk -F '=' '{print$1}'
 	;;
 	values)
-		uci -q show ${appname}.${uciname} | sed 1d | sed -e "s/${appname}.${uciname}.//g" | awk -F '=' '{print$2}'
+		uci -q get ${appname}.${uciname} &> /dev/null && uci -q show ${appname}.${uciname} | sed 1d | sed -e "s/${appname}.${uciname}.//g" | awk -F '=' '{print$2}'
 	;;
 	show)
 		if [ -z "${uciname}" ]; then 
@@ -45,7 +45,7 @@ case "$method" in
 	;;
 	export)
 		[ -z "${uciname}" ] && uciname="main"
-		uci -q show ${appname}.${uciname} | sed 1d | sed -e "s/${appname}.${uciname}.//g" | awk -F '=' '{print$1"=\""$2"\""}' | tr "\n" ";"
+		uci -q get ${appname}.${uciname} &> /dev/null && uci -q show ${appname}.${uciname} | sed 1d | sed -e "s/${appname}.${uciname}.//g" | awk -F '=' '{print$1"=\""$2"\""}' | tr "\n" ";"
 	;;
 	*)
 		echo "\`mbdb $@\` error!"
diff --git a/appstore/history/mixbox_darwin_x86_64.tar.gz b/appstore/history/mixbox_darwin_x86_64.tar.gz
index 8776ec2..84305fa 100644
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diff --git a/appstore/history/mixbox_linux_arm.tar.gz b/appstore/history/mixbox_linux_arm.tar.gz
index b4d70e3..db2b848 100644
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diff --git a/appstore/history/mixbox_linux_mips.tar.gz b/appstore/history/mixbox_linux_mips.tar.gz
index 519a1b6..1a334cb 100644
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diff --git a/appstore/history/mixbox_linux_x86_64.tar.gz b/appstore/history/mixbox_linux_x86_64.tar.gz
index f6a28ce..e2e6e53 100644
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diff --git a/appstore/mixbox_darwin_x86_64.tar.gz b/appstore/mixbox_darwin_x86_64.tar.gz
index d6cd209..1133d15 100644
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diff --git a/appstore/mixbox_linux_arm.tar.gz b/appstore/mixbox_linux_arm.tar.gz
index bdcb72c..ac437ed 100644
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diff --git a/appstore/mixbox_linux_mips.tar.gz b/appstore/mixbox_linux_mips.tar.gz
index 73f7dbc..1165a31 100644
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diff --git a/appstore/mixbox_linux_x86_64.tar.gz b/appstore/mixbox_linux_x86_64.tar.gz
index d902d2f..784e356 100644
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