diff --git a/lua/lib/populate.lua b/lua/lib/populate.lua
index 6d585175..da826a46 100644
--- a/lua/lib/populate.lua
+++ b/lua/lib/populate.lua
@@ -73,7 +73,7 @@ local function gen_ignore_check()
   end
 
   return function(path)
-    idx = path:match(".+()%.%w+$")
+    local idx = path:match(".+()%.%w+$")
     local ignore_extension
     if idx then
         ignore_extension = ignore_list['*'..string.sub(path, idx)]