diff --git a/runtime/filetype.vim b/runtime/filetype.vim
index 87eac41..209f0dc 100644
--- a/runtime/filetype.vim
+++ b/runtime/filetype.vim
@@ -1,7 +1,7 @@
 " Vim support file to detect file types
 "
 " Maintainer:	The Vim Project <https://github.com/vim/vim>
-" Last Change:	2025 Apr 24
+" Last Change:	2025 May 02
 " Former Maintainer:	Bram Moolenaar <Bram@vim.org>
 
 " Listen very carefully, I will say this only once
@@ -1811,6 +1811,8 @@
 au BufNewFile,BufRead */.aws/config,*/.aws/credentials	setf confini
 au BufNewFile,BufRead *.nmconnection			setf confini
 au BufNewFile,BufRead paru.conf				setf confini
+au BufNewFile,BufRead */{,.}gnuradio/*.conf		setf confini
+au BufNewFile,BufRead */gnuradio/conf.d/*.conf		setf confini
 
 " Pacman hooks
 au BufNewFile,BufRead *.hook
diff --git a/runtime/syntax/cfg.vim b/runtime/syntax/cfg.vim
index 4b5ebf5..6978876 100644
--- a/runtime/syntax/cfg.vim
+++ b/runtime/syntax/cfg.vim
@@ -1,7 +1,7 @@
 " Vim syntax file
 " Language:	Good old CFG files
 " Maintainer:	Igor N. Prischepoff (igor@tyumbit.ru, pri_igor@mail.ru)
-" Last change:	2012 Aug 11
+" Last Change:	2012 Aug 11
 " 2024 Nov 14 by Vim project:  // only denotes a comment when starting a line (#16051)
 
 " quit when a syntax file was already loaded
diff --git a/runtime/syntax/confini.vim b/runtime/syntax/confini.vim
index 823d417..009a60c 100644
--- a/runtime/syntax/confini.vim
+++ b/runtime/syntax/confini.vim
@@ -1,5 +1,7 @@
 " Vim syntax file
 " Language: confini
+" Last Change:
+" 2025 May 02 by Vim project commented line starts with # only
 
 " Quit if a syntax file was already loaded
 if exists("b:current_syntax")
@@ -9,4 +11,8 @@
 " Use the cfg syntax for now, it's similar.
 runtime! syntax/cfg.vim
 
+" Only accept '#' as the start of a comment.
+syn clear CfgComment
+syn match CfgComment "#.*" contains=@Spell
+
 let b:current_syntax = 'confini'