diff --git a/vimrc b/vimrc
index 26dcc9b..4a5c24d 100644
--- a/vimrc
+++ b/vimrc
@@ -133,9 +133,9 @@ let g:table_mode_toggle_map = 'M'
 Plug 'vim-scripts/DoxygenToolkit.vim', {'for': ['cpp', 'c']}
 let g:DoxygenToolkit_commentType = "C++"
 
-" markdown live browser preview
-Plug 'suan/vim-instant-markdown'
-let g:markdown_fenced_languages = ['cpp', 'c', 'cmake', 'sh', 'vim', 'python', 'yaml']
+" markdown fenced code block languages
+let g:markdown_fenced_languages =
+  \ ['cpp', 'c', 'cmake', 'sh', 'vim', 'python', 'yaml']
 
 " xml syntax folding
 let g:xml_syntax_folding=1