diff --git a/lua/catppuccin/core/integrations/ts_rainbow.lua b/lua/catppuccin/core/integrations/ts_rainbow.lua
index e96c3a9..1e4b74a 100644
--- a/lua/catppuccin/core/integrations/ts_rainbow.lua
+++ b/lua/catppuccin/core/integrations/ts_rainbow.lua
@@ -2,7 +2,7 @@ local M = {}
 
 function M.get(cp)
 	local transparent_background = require("catppuccin.config").options.transparent_background
-	local bg_highlight = transparent_background and nil or cp.black2
+	local bg_highlight = transparent_background and "NONE" or cp.black2
 	return {
 		rainbowcol1 = {bg = bg_highlight, fg = cp.red},
 		rainbowcol2 = {bg = bg_highlight, fg = cp.teal},