diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim
index e0810bd..4ae6d5c 100644
--- a/ftplugin/markdown.vim
+++ b/ftplugin/markdown.vim
@@ -1,3 +1,5 @@
+set textwidth=80
+
 " markdown : jump to next heading
 " https://gist.github.com/romainl/ac63e108c3d11084be62b3c04156c263
 function! s:JumpToNextHeading(direction, count)
diff --git a/init.vim b/init.vim
index 64c17d5..3df16ce 100644
--- a/init.vim
+++ b/init.vim
@@ -250,7 +250,6 @@ set shiftround
 set noexpandtab
 set autoindent
 
-set textwidth=120
 set formatoptions=cq
 set wrapmargin=0