diff --git a/mods/MAPGEN/mcl_villages/const.lua b/mods/MAPGEN/mcl_villages/const.lua
index 6621dbf3a..e5cbc9b39 100644
--- a/mods/MAPGEN/mcl_villages/const.lua
+++ b/mods/MAPGEN/mcl_villages/const.lua
@@ -7,7 +7,7 @@ end
 
 --[[ Manually set in 'buildings.lua'
 -- material to replace cobblestone with
-wallmaterial = {
+local wallmaterial = {
 	"mcl_core:junglewood",
 	"mcl_core:sprucewood",
 	"mcl_core:wood",
diff --git a/tools/create_luacheck.py b/tools/create_luacheck.py
index 1c38c33f4..a9caad38e 100755
--- a/tools/create_luacheck.py
+++ b/tools/create_luacheck.py
@@ -4,8 +4,10 @@ from pathlib import Path
 
 path =  "./mods/"
 # pattern = re.compile(r'^(?P<nomtableau>[^ \t\]]+)[ ]*=[ ]*\{')
-pattern = re.compile(r'^(?P<nomtableau>[^ \t\]]+)[ ]*=[ ]*\{')
+pattern = re.compile(r'^(?P<nomtableau>[A-Za-z_0-9]+)[ ]*=[ ]*\{')
+pattern_local = re.compile(r'local (?P<nomvar>[A-Za-z_0-9]+)')
 
+global_vars = []
 
 pathlist = Path(path).rglob('*.lua')
 for path in pathlist:
@@ -13,18 +15,31 @@ for path in pathlist:
     # print(path_in_str)
     trouve = False
     with open(path_in_str) as f:
+        variables_locales = []
         for i, line in enumerate(f.readlines()):
             m = pattern.match(line)
             if m:
-                print(path_in_str, ":", i+1, ":", m.group('nomtableau').strip())
-                trouve = True
-                break
-        if not trouve:
-            print(path_in_str, ": -")
+                nomtableau = m.group('nomtableau')
+                if nomtableau not in variables_locales:
+                    print(path_in_str, ":", i+1, ":", m.group('nomtableau').strip())
+                    global_vars.append(m.group('nomtableau').strip())
+                    trouve = True
+                    break
 
-for subdir, dirs, files in os.walk(path):
+            else:
+                n = pattern_local.match(line)
+                if n:
+                    variables_locales.append(n.group('nomvar'))
+
+        if not trouve:
+            nb_varloc = len(variables_locales)
+            #print(path_in_str, ": -", "({} variables locales)".format(nb_varloc) if nb_varloc > 0 else '')
+
+""" for subdir, dirs, files in os.walk(path):
     for file in files:
         print(os.path.join(subdir, file))
         filepath = subdir + os.sep + file
         if filepath.endswith(".lua"):
-            print(filepath)
\ No newline at end of file
+            print(filepath) """
+
+print(', '.join(['"{}"'.format(v) for v in global_vars]))