diff --git a/package/gluon-core/files/lib/gluon/functions/sysconfig.sh b/package/gluon-core/files/lib/gluon/functions/sysconfig.sh
index 67aa1061..60b410f2 100644
--- a/package/gluon-core/files/lib/gluon/functions/sysconfig.sh
+++ b/package/gluon-core/files/lib/gluon/functions/sysconfig.sh
@@ -12,3 +12,7 @@ sysconfig_isset() {
 sysconfig_set() {
 	echo -n "$2" > "$SYSCONFIGDIR/$1"
 }
+
+sysconfig_unset() {
+	rm -f "$SYSCONFIGDIR/$1"
+}
diff --git a/package/gluon-core/files/usr/lib/lua/gluon/sysconfig.lua b/package/gluon-core/files/usr/lib/lua/gluon/sysconfig.lua
index 35c5062c..3ba26e95 100644
--- a/package/gluon-core/files/usr/lib/lua/gluon/sysconfig.lua
+++ b/package/gluon-core/files/usr/lib/lua/gluon/sysconfig.lua
@@ -11,10 +11,13 @@ local function get(_, name)
 end
 
 local function set(_, name, val)
-	local ret = nil
-	local f = io.open(sysconfigdir .. name, 'w+')
-	f:write(val)
-	f:close()
+	if val then
+		local f = io.open(sysconfigdir .. name, 'w+')
+		f:write(val)
+		f:close()
+	else
+		os.remove(sysconfigdir .. name)
+	end
 end
 
 local setmetatable = setmetatable