diff --git a/after/ftplugin/html.lua b/after/ftplugin/html.lua
index abd4d87..d410660 100644
--- a/after/ftplugin/html.lua
+++ b/after/ftplugin/html.lua
@@ -1 +1 @@
-require('conftool').set({'tabstop', 2},{'shiftwidth', 2})
+require('conftool').set({'tabstop', 4},{'shiftwidth', 4})
diff --git a/after/ftplugin/markdown.lua b/after/ftplugin/markdown.lua
index fb5cb00..37dc4f8 100644
--- a/after/ftplugin/markdown.lua
+++ b/after/ftplugin/markdown.lua
@@ -1 +1 @@
-require('conftool').set({'tabstop', 5},{'shiftwidth', 5})
+require('conftool').set({'tabstop', 5},{'shiftwidth', 5}, {'expandtab', false})
diff --git a/lua/defs.lua b/lua/defs.lua
index cf02255..eba4dda 100644
--- a/lua/defs.lua
+++ b/lua/defs.lua
@@ -1,7 +1,7 @@
 return {
 	template_dir = '~/templates',
-	external_term = 'xfce4-terminal',
-	external_filemgr = 'thunar',
-	external_pdfviewer = 'atril',
+	external_term = 'gterm',
+	external_filemgr = 'gfiles',
+	external_pdfviewer = 'gpdf',
 	lsp_path = vim.env.HOME .. '/.local/share/lsp_servers'
 }
diff --git a/lua/ui.lua b/lua/ui.lua
index 353c4cd..30c4685 100644
--- a/lua/ui.lua
+++ b/lua/ui.lua
@@ -5,7 +5,7 @@ local ct = require 'conftool'
 --
 vim.cmd('filetype plugin indent on')
 ct.set('autoindent', 'smartindent', 'cindent')
-ct.set({'tabstop', 5}, {'shiftwidth', 5})
+ct.set({'tabstop', 4}, {'shiftwidth', 4})
 
 --
 -- Indent indicators
@@ -19,7 +19,6 @@ vim.opt.list = true
 ct.set('ruler', 'showcmd', 'cursorline', 'title')
 -- ct.set('number')
 ct.set(
-	{'background', 'light'},
 	{'termguicolors', true},
 	{'signcolumn', 'number'},
 	{'conceallevel', 0},