diff --git a/runtime/doc/news.txt b/runtime/doc/news.txt
index 495406bf80..758de13f67 100644
--- a/runtime/doc/news.txt
+++ b/runtime/doc/news.txt
@@ -482,6 +482,8 @@ These existing features changed their behavior.
   • |nvim_create_autocmd()|
   • |nvim_exec_autocmds()|
   • |nvim_get_autocmds()|
+• |OptionSet| is no longer triggered during startup by automatic
+  |'background'| detection.
 
 ==============================================================================
 REMOVED FEATURES                                                 *news-removed*
diff --git a/runtime/doc/options.txt b/runtime/doc/options.txt
index 194dfcf77c..c3358da8e8 100644
--- a/runtime/doc/options.txt
+++ b/runtime/doc/options.txt
@@ -850,7 +850,7 @@ A jump table for the options with a short description can be found at |Q_op|.
 			global
 	When set to "dark" or "light", adjusts the default color groups for
 	that background type.  The |TUI| or other UI sets this on startup
-	(triggering |OptionSet|) if it can detect the background color.
+	if it can detect the background color.
 
 	This option does NOT change the background color, it tells Nvim what
 	the "inherited" (terminal/GUI) background looks like.
diff --git a/runtime/lua/vim/_core/defaults.lua b/runtime/lua/vim/_core/defaults.lua
index 8aa2db8d99..bfd7f48a5b 100644
--- a/runtime/lua/vim/_core/defaults.lua
+++ b/runtime/lua/vim/_core/defaults.lua
@@ -940,20 +940,6 @@ do
               local luminance = (0.299 * rr) + (0.587 * gg) + (0.114 * bb)
               local bg = luminance < 0.5 and 'dark' or 'light'
               vim.api.nvim_set_option_value('background', bg, {})
-
-              -- Ensure OptionSet still triggers when we set the background during startup
-              if vim.v.vim_did_enter == 0 then
-                vim.api.nvim_create_autocmd('VimEnter', {
-                  group = group,
-                  once = true,
-                  nested = true,
-                  callback = function()
-                    vim.api.nvim_exec_autocmds('OptionSet', {
-                      pattern = 'background',
-                    })
-                  end,
-                })
-              end
             end
           end
         end,
diff --git a/runtime/lua/vim/_meta/options.gen.lua b/runtime/lua/vim/_meta/options.gen.lua
index 23ea1a24b4..e73c310de2 100644
--- a/runtime/lua/vim/_meta/options.gen.lua
+++ b/runtime/lua/vim/_meta/options.gen.lua
@@ -224,7 +224,7 @@ vim.go.awa = vim.go.autowriteall
 
 --- When set to "dark" or "light", adjusts the default color groups for
 --- that background type.  The `TUI` or other UI sets this on startup
---- (triggering `OptionSet`) if it can detect the background color.
+--- if it can detect the background color.
 ---
 --- This option does NOT change the background color, it tells Nvim what
 --- the "inherited" (terminal/GUI) background looks like.
diff --git a/src/nvim/options.lua b/src/nvim/options.lua
index a694a74386..996f965592 100644
--- a/src/nvim/options.lua
+++ b/src/nvim/options.lua
@@ -366,7 +366,7 @@ local options = {
       desc = [=[
         When set to "dark" or "light", adjusts the default color groups for
         that background type.  The |TUI| or other UI sets this on startup
-        (triggering |OptionSet|) if it can detect the background color.
+        if it can detect the background color.
 
         This option does NOT change the background color, it tells Nvim what
         the "inherited" (terminal/GUI) background looks like.
diff --git a/test/functional/terminal/tui_spec.lua b/test/functional/terminal/tui_spec.lua
index ce91534304..e9312237de 100644
--- a/test/functional/terminal/tui_spec.lua
+++ b/test/functional/terminal/tui_spec.lua
@@ -4282,23 +4282,28 @@ describe('TUI bg color', function()
     end)
   end)
 
-  it('triggers OptionSet from automatic background processing', function()
+  it('does not trigger OptionSet from automatic background processing', function()
+    command('set background=light')
+    local child_server = new_pipename()
     local screen = tt.setup_child_nvim({
       '--clean',
+      '--listen',
+      child_server,
       '--cmd',
       'colorscheme vim',
       '--cmd',
       'set noswapfile',
       '-c',
-      'autocmd OptionSet background echo "did OptionSet, yay!"',
+      [[let g:background_optionset = 0]],
+      '-c',
+      [[autocmd OptionSet background let g:background_optionset += 1]],
     })
-    screen:expect([[
-      ^                                                  |
-      {5:~}                                                 |*3
-      {3:[No Name]                       0,0-1          All}|
-      did OptionSet, yay!                               |
-      {5:-- TERMINAL --}                                    |
-    ]])
+    screen:expect({ any = '%[No Name%]' })
+    local child_session = n.connect(child_server)
+    retry(nil, nil, function()
+      eq({ true, 'light' }, { child_session:request('nvim_eval', '&background') })
+    end)
+    eq({ true, 0 }, { child_session:request('nvim_eval', 'g:background_optionset') })
   end)
 
   it('sends theme update notifications when background changes #31652', function()