diff --git a/.vimrc b/.vimrc
index dec2aec..7a305b7 100644
--- a/.vimrc
+++ b/.vimrc
@@ -239,6 +239,10 @@ nnoremap <Leader>z :set nonumber! norelativenumber!<CR>
 
 " entferne trailing whitespaces beim speichern
 autocmd BufWritePre * :%s/\s\+$//e
+" entferne multiple consecutive empty lines
+if executable('cat')
+  autocmd BufWritePre *.md  %!cat -s
+endif
 
 " Exit Vim if NERDTree is the only window remaining in the only tab.
 autocmd BufEnter * if tabpagenr('$') == 1 && winnr('$') == 1 && exists('b:NERDTree') && b:NERDTree.isTabTree() | quit | endif