diff --git a/lua/avante/config.lua b/lua/avante/config.lua
index 32d58b2a2..e5115219b 100644
--- a/lua/avante/config.lua
+++ b/lua/avante/config.lua
@@ -123,10 +123,6 @@ M.defaults = {
   hints = {
     enabled = true,
   },
-  --- @class AvanteThemeConfig
-  --- @field theme "light" | "dark"
-  --- @type string
-  theme = "dark",
 }
 
 ---@type avante.Config
diff --git a/lua/avante/highlights.lua b/lua/avante/highlights.lua
index c6988994c..1bd2d3158 100644
--- a/lua/avante/highlights.lua
+++ b/lua/avante/highlights.lua
@@ -1,13 +1,12 @@
 local api = vim.api
-local Config = require("avante.config")
 
 local M = {
   TITLE = "AvanteTitle",
   REVERSED_TITLE = "AvanteReversedTitle",
   SUBTITLE = "AvanteSubtitle",
   REVERSED_SUBTITLE = "AvanteReversedSubtitle",
-  THIRDTITLE = "AvanteThirdTitle",
-  REVERSED_THIRDTITLE = "AvanteReversedThirdTitle",
+  THRIDTITLE = "AvanteThirdTitle",
+  REVERSED_THRIDTITLE = "AvanteReversedThirdTitle",
   REVERSED_NORMAL = "AvanteReversedNormal",
 }
 
@@ -19,22 +18,12 @@ M.setup = function()
   local normal_float = api.nvim_get_hl(0, { name = "NormalFloat" })
 
   api.nvim_set_hl(0, M.REVERSED_NORMAL, { fg = normal.bg })
-
-  if Config.defaults.theme == "light" then
-    api.nvim_set_hl(0, M.TITLE, { fg = "#1e222a", bg = "#98c379" })
-    api.nvim_set_hl(0, M.REVERSED_TITLE, { fg = "#98c379" })
-    api.nvim_set_hl(0, M.SUBTITLE, { fg = "#1e222a", bg = "#7998c3" })
-    api.nvim_set_hl(0, M.REVERSED_SUBTITLE, { fg = "#7998c3" })
-    api.nvim_set_hl(0, M.THIRDTITLE, { fg = "#1e222a", bg = "#a479c3" })
-    api.nvim_set_hl(0, M.REVERSED_THIRDTITLE, { fg = "#a479c3" })
-  else
-    api.nvim_set_hl(0, M.TITLE, { fg = "#1e222a", bg = "#98c379" })
-    api.nvim_set_hl(0, M.REVERSED_TITLE, { fg = "#98c379" })
-    api.nvim_set_hl(0, M.SUBTITLE, { fg = "#1e222a", bg = "#56b6c2" })
-    api.nvim_set_hl(0, M.REVERSED_SUBTITLE, { fg = "#56b6c2" })
-    api.nvim_set_hl(0, M.THIRDTITLE, { fg = "#ABB2BF", bg = "#353B45" })
-    api.nvim_set_hl(0, M.REVERSED_THIRDTITLE, { fg = "#353B45" })
-  end
+  api.nvim_set_hl(0, M.TITLE, { fg = "#1e222a", bg = "#98c379" })
+  api.nvim_set_hl(0, M.REVERSED_TITLE, { fg = "#98c379" })
+  api.nvim_set_hl(0, M.SUBTITLE, { fg = "#1e222a", bg = "#56b6c2" })
+  api.nvim_set_hl(0, M.REVERSED_SUBTITLE, { fg = "#56b6c2" })
+  api.nvim_set_hl(0, M.THRIDTITLE, { fg = "#ABB2BF", bg = "#353B45" })
+  api.nvim_set_hl(0, M.REVERSED_THRIDTITLE, { fg = "#353B45" })
 
   api.nvim_set_hl(M.hint_ns, "NormalFloat", { fg = normal_float.fg, bg = normal_float.bg })
 
diff --git a/lua/avante/sidebar.lua b/lua/avante/sidebar.lua
index f1caca340..734e719f0 100644
--- a/lua/avante/sidebar.lua
+++ b/lua/avante/sidebar.lua
@@ -431,8 +431,8 @@ function Sidebar:render_input_container()
     self.input_container.winid,
     self.input_container.bufnr,
     header_text,
-    Highlights.THIRDTITLE,
-    Highlights.REVERSED_THIRDTITLE
+    Highlights.THRIDTITLE,
+    Highlights.REVERSED_THRIDTITLE
   )
 end