-nnoremap <buffer> gd :YcmCompleter GoTo<CR>
-nnoremap <buffer> <C-W>d :vs<CR>:YcmCompleter GoTo<CR>
-nnoremap <buffer> gD :YcmCompleter GoToReferences<CR>
+if exists("g:loaded_youcompleteme")
+ nnoremap <buffer> gd :YcmCompleter GoTo<CR>
+ nnoremap <buffer> <C-W>d :vs<CR>:YcmCompleter GoTo<CR>
+ nnoremap <buffer> gD :YcmCompleter GoToReferences<CR>
+endif