diff --git a/lua/lib/fs.lua b/lua/lib/fs.lua
index 5df4f830..13146988 100644
--- a/lua/lib/fs.lua
+++ b/lua/lib/fs.lua
@@ -129,7 +129,7 @@ local function do_copy(source, destination)
   luv.fs_mkdir(destination, source_stats.mode)
 
   while true do
-    local name, t = luv.fs_scandir_next(handle)
+    local name, _ = luv.fs_scandir_next(handle)
     if not name then break end
 
     local new_name = source..'/'..name
@@ -173,15 +173,15 @@ local function do_paste(node, action_type, action_fn)
     local dest_stats = luv.fs_stat(dest)
     local should_process = true
     if dest_stats then
-      local ans = vim.fn.input(dest..' already exists, overwrite ? y/n: ')
+      ans = vim.fn.input(dest..' already exists, overwrite ? y/n: ')
       clear_prompt()
       should_process = ans:match('^y')
     end
 
     if should_process then
-      local success, msg = action_fn(entry.absolute_path, dest)
+      local success, errmsg = action_fn(entry.absolute_path, dest)
       if not success then
-        api.nvim_err_writeln('Could not '..action_type..' '..entry.absolute_path..' - '..msg)
+        api.nvim_err_writeln('Could not '..action_type..' '..entry.absolute_path..' - '..errmsg)
       end
     end
   end
diff --git a/lua/lib/populate.lua b/lua/lib/populate.lua
index 81480e05..20c4904d 100644
--- a/lua/lib/populate.lua
+++ b/lua/lib/populate.lua
@@ -129,7 +129,7 @@ function M.refresh_entries(entries, cwd)
   local change_prev
   for _, e in ipairs(all) do
     for _, name in ipairs(e.entries) do
-      chang_prev = true
+      change_prev = true
       if not named_entries[name] then
         local n = e.fn(cwd, name)
         if e.check(n.link_to, n.absolute_path) then
@@ -141,10 +141,10 @@ function M.refresh_entries(entries, cwd)
           entries_idx[name] = idx
           cached_entries[idx] = name
         else
-          chang_prev = false
+          change_prev = false
         end
       end
-      if chang_prev then prev = name end
+      if change_prev then prev = name end
     end
   end
 end
diff --git a/lua/lib/renderer.lua b/lua/lib/renderer.lua
index 1eb1a27c..590d6a84 100644
--- a/lua/lib/renderer.lua
+++ b/lua/lib/renderer.lua
@@ -92,7 +92,7 @@ local get_padding = function(depth)
 end
 
 if vim.g.lua_tree_indent_markers == 1 then
-  get_padding = function(depth, idx, tree, node, markers)
+  get_padding = function(depth, idx, tree, _, markers)
     local padding = ""
     if depth ~= 0 then
       local rdepth = depth/2