diff --git a/runtime/syntax/lc.vim b/runtime/syntax/lc.vim
index a334529..1991c1b 100644
--- a/runtime/syntax/lc.vim
+++ b/runtime/syntax/lc.vim
@@ -2,6 +2,7 @@
 " Language:     Elsa
 " Maintainer:   Miles Glapa-Grossklag <miles@glapa-grossklag.com>
 " Last Change:  2023-01-29
+"               2024 May 25 by Riley Bruins <ribru17@gmail.com> (move 'commentstring' to ftplugin)
 
 if exists('b:current_syntax')
   finish
@@ -13,7 +14,6 @@
 highlight link elsaKeyword Keyword
 
 " Comments
-setlocal commentstring=--%s
 syntax match elsaComment "\v--.*$"
 highlight link elsaComment Comment
 
diff --git a/runtime/syntax/mma.vim b/runtime/syntax/mma.vim
index d2f22e9..802cbe5 100644
--- a/runtime/syntax/mma.vim
+++ b/runtime/syntax/mma.vim
@@ -2,6 +2,7 @@
 " Language:     Mathematica
 " Maintainer:   steve layland <layland@wolfram.com>
 " Last Change:  2012 Feb 03 by Thilo Six
+"               2024 May 24 by Riley Bruins <ribru17@gmail.com> (remove 'commentstring')
 " Source:       http://members.wri.com/layland/vim/syntax/mma.vim
 "               http://vim.sourceforge.net/scripts/script.php?script_id=1273
 " Id:           $Id: mma.vim,v 1.4 2006/04/14 20:40:38 vimboss Exp $
@@ -248,7 +249,6 @@
 "syntax region mmaRegion start="(\*\+[^<]*<!--[^>]*\*\+)" end="--> \*)" containedin=ALLBUT,@mmaStrings transparent fold keepend
 
 " show fold text
-set commentstring='(*%s*)'
 "set foldtext=MmaFoldText()
 
 "function MmaFoldText()