diff --git a/dot_config/nvim/init.lua b/dot_config/nvim/init.lua
index df63a2a..68351f5 100644
--- a/dot_config/nvim/init.lua
+++ b/dot_config/nvim/init.lua
@@ -319,7 +319,7 @@ require('nvim-tree').setup({
     ignore = true
   },
   filters = {
-    custom = '_null-ls.*',
+    custom = { '_null-ls.*' },
   },
 })