diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
new file mode 100644
index 0000000..7acb366
--- /dev/null
+++ b/.github/workflows/build.yml
@@ -0,0 +1,17 @@
+name: build
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v1
+    - name: apt
+      run: sudo apt-get install -y luarocks
+    - name: luacheck install
+      run: luarocks install --local luacheck
+    - name: luacheck run
+      run: $HOME/.luarocks/bin/luacheck ./
diff --git a/.luacheckrc b/.luacheckrc
new file mode 100644
index 0000000..6bec803
--- /dev/null
+++ b/.luacheckrc
@@ -0,0 +1,21 @@
+unused_args = false
+allow_defined_top = true
+exclude_files = {".luacheckrc"}
+
+globals = {
+    "minetest",
+}
+
+read_globals = {
+    string = {fields = {"split"}},
+    table = {fields = {"copy", "getn"}},
+
+    -- Builtin
+    "vector", "ItemStack",
+    "dump", "DIR_DELIM", "VoxelArea", "Settings",
+
+    -- MTG
+    "default", "sfinv", "creative", "carts",
+
+    --depends
+}
\ No newline at end of file
diff --git a/README.md b/README.md
index 0549554..2bf1b66 100644
--- a/README.md
+++ b/README.md
@@ -11,3 +11,4 @@ Look at the water and the jungle trunk at the center.
 * mapfix_default_size (by default 24) : size used when omitted
 * mapfix_max_size (by default 32) : maximum size allowed for players
 * mapfix_delay (by default 15) : minimal delay in seconds between 2 `/mapfix` (to avoid server freezing)
+* mapfix_priv (by default server) : priv that allows use of `/mapfix` without restrictions
diff --git a/init.lua b/init.lua
index d79fbf1..9bf6e42 100644
--- a/init.lua
+++ b/init.lua
@@ -13,6 +13,16 @@ local default_size = tonumber(minetest.settings:get("mapfix_default_size")) or 2
 local max_size = tonumber(minetest.settings:get("mapfix_max_size")) or 32
 local delay = tonumber(minetest.settings:get("mapfix_delay")) or 15
 
+local function mapfix_priv()
+    local priv = minetest.settings:get("mapfix_priv")
+
+    if not minetest.registered_privileges[priv] then
+        return "server"
+    else
+        return priv
+    end
+end
+
 minetest.register_chatcommand("mapfix", {
 	params = "<size>",
 	description = "Recalculate the flowing liquids and the light of a chunk",
@@ -23,21 +33,24 @@ minetest.register_chatcommand("mapfix", {
 		if size >= 121 then
 			return false, "Radius is too big"
 		end
-		local privs = minetest.check_player_privs(name, {server=true})
+		local privs = minetest.check_player_privs(name, mapfix_priv())
 		local time = os.time()
 
 		if not privs then
 			if size > max_size then
-				return false, "You need the server privilege to exceed the radius of " .. max_size .. " blocks"
+				return false, "You need the " .. mapfix_priv() .. " privilege to exceed the radius of " .. max_size .. " blocks"
 			elseif time - previous < delay then
 				return false, "Wait at least " .. delay .. " seconds from the previous \"/mapfix\"."
 			end
 			previous = time
 		end
 
-		minetest.log("action", name .. " uses mapfix at " .. minetest.pos_to_string(vector.round(pos)) .. " with radius " .. size)
+		minetest.log("action",
+        name .. " uses mapfix at " .. minetest.pos_to_string(vector.round(pos)) .. " with radius " .. size)
 
-		size = math.max(math.floor(size - 8), 0) -- When passed to get_voxel_manip, positions are rounded up, to a multiple of 16 nodes in each direction. By subtracting 8 it's rounded to the nearest chunk border. max is used to avoid negative radius.
+        -- When passed to get_voxel_manip, positions are rounded up, to a multiple of 16 nodes in each direction.
+        -- By subtracting 8 it's rounded to the nearest chunk border. max is used to avoid negative radius.
+		size = math.max(math.floor(size - 8), 0)
 
 		local minp = vector.subtract(pos, size)
 		local maxp = vector.add(pos, size)
diff --git a/settingtypes.txt b/settingtypes.txt
new file mode 100644
index 0000000..00bff61
--- /dev/null
+++ b/settingtypes.txt
@@ -0,0 +1,4 @@
+mapfix_default_size (default size a mapfix range is) int 24
+mapfix_max_size (max size a mapfix range can be) int 32
+mapfix_delay (delay between issueing of /mapfix for players) int 15
+mapfix_priv (priv for unrestricted /mapfix use) string server
\ No newline at end of file