diff --git a/lua/settings.lua b/lua/settings.lua
index 940d399..2d4ce4e 100644
--- a/lua/settings.lua
+++ b/lua/settings.lua
@@ -16,6 +16,10 @@ vim.opt.completeopt = { 'menu', 'menuone', 'noselect' }
 -- Spelling
 vim.opt.spelllang = { 'en_gb' }
 
+-- Keyword characters (add $ for PHP/shell variables, - for CSS/HTML/config files)
+vim.opt.iskeyword:append('$')
+vim.opt.iskeyword:append('-')
+
 -- Visuals
 vim.opt.showbreak = '  ↳'
 vim.opt.listchars = {