diff --git a/vim/ftplugin/cpp.vim b/vim/ftplugin/cpp.vim
index 8d32c81..2a45a11 100644
--- a/vim/ftplugin/cpp.vim
+++ b/vim/ftplugin/cpp.vim
@@ -7,4 +7,5 @@ setlocal shiftwidth=2
 setlocal tabstop=2
 
 " Documentation inside vim
-autocmd FileType cpp set keywordprg=cppman
+command! -nargs=+ Cppman silent! call system("tmux split-window cppman " . expand(<q-args>))
+autocmd FileType cpp nnoremap <silent><buffer> K <Esc>:Cppman <cword><CR>