diff --git a/.config/nvim/ftplugin/haskell.lua b/.config/nvim/ftplugin/haskell.lua
index ee1dba9a..ddc57c09 100644
--- a/.config/nvim/ftplugin/haskell.lua
+++ b/.config/nvim/ftplugin/haskell.lua
@@ -5,4 +5,4 @@ vim.bo.shiftwidth = 2
 vim.bo.expandtab = true
 
 -- useful for CPP extension
-vim.o.smartindent = true
+vim.bo.smartindent = true