diff --git a/.vimrc b/.vimrc
index 166e1c6..55bd6ff 100644
--- a/.vimrc
+++ b/.vimrc
@@ -72,4 +72,4 @@ filetype plugin on
 let g:NERDCreateDefaultMappings = 0
 let g:NERDSpaceDelims = 1
 nnoremap <C-_> :call nerdcommenter#Comment('n', 'invert')<CR>
-nnoremap <C-a> :call nerdcommenter#Comment('n', 'append')<CR>
+nnoremap <C-S-a> :call nerdcommenter#Comment('n', 'append')<CR>