diff --git a/runtime/ftplugin/deb822sources.vim b/runtime/ftplugin/deb822sources.vim
index 4936f42..31c81b1 100644
--- a/runtime/ftplugin/deb822sources.vim
+++ b/runtime/ftplugin/deb822sources.vim
@@ -1,6 +1,6 @@
 " Language:     Debian sources.list
 " Maintainer:   Debian Vim Maintainers <team+vim@tracker.debian.org>
-" Last Change:  2024 Mar 20
+" Last Change:  2024 May 25
 " License:      Vim License
 " URL:          https://salsa.debian.org/vim-team/vim-debian/blob/main/ftplugin/deb822sources.vim
 
@@ -10,7 +10,7 @@
 let b:did_ftplugin=1
 
 setlocal comments=:#
-setlocal commentstring=#%s
+setlocal commentstring=#\ %s
 setlocal formatoptions-=t
 
 let b:undo_ftplugin = 'setlocal comments< commentstring< formatoptions<'
diff --git a/runtime/ftplugin/debcontrol.vim b/runtime/ftplugin/debcontrol.vim
index bb710e5..5b8292b 100644
--- a/runtime/ftplugin/debcontrol.vim
+++ b/runtime/ftplugin/debcontrol.vim
@@ -2,7 +2,7 @@
 " Language:     Debian control files
 " Maintainer:   Debian Vim Maintainers
 " Former Maintainer:    Pierre Habouzit <madcoder@debian.org>
-" Last Change:  2023 Jan 16
+" Last Change:  2024 May 25
 " URL:          https://salsa.debian.org/vim-team/vim-debian/blob/main/ftplugin/debcontrol.vim
 
 " Do these settings once per buffer
@@ -19,8 +19,11 @@
 endif
 setlocal textwidth=0
 
+setlocal comments=:#
+setlocal commentstring=#\ %s
+
 " Clean unloading
-let b:undo_ftplugin = 'setlocal tw< foldmethod< foldexpr< foldtext<'
+let b:undo_ftplugin = 'setlocal tw< foldmethod< foldexpr< foldtext< comments< commentstring<'
 
 " }}}1
 
diff --git a/runtime/ftplugin/debsources.vim b/runtime/ftplugin/debsources.vim
index cbb4faf..2c5ea35 100644
--- a/runtime/ftplugin/debsources.vim
+++ b/runtime/ftplugin/debsources.vim
@@ -1,6 +1,6 @@
 " Language:     Debian sources.list
 " Maintainer:   Debian Vim Maintainers <team+vim@tracker.debian.org>
-" Last Change:  2023 Aug 30
+" Last Change:  2024 May 25
 " License:      Vim License
 " URL:          https://salsa.debian.org/vim-team/vim-debian/blob/main/ftplugin/debsources.vim
 
@@ -10,7 +10,7 @@
 let b:did_ftplugin=1
 
 setlocal comments=:#
-setlocal commentstring=#%s
+setlocal commentstring=#\ %s
 setlocal formatoptions-=t
 
 let b:undo_ftplugin = 'setlocal comments< commentstring< formatoptions<'