diff --git a/autoload/airline/extensions.vim b/autoload/airline/extensions.vim
index 93f2b9c6..25f47ec9 100644
--- a/autoload/airline/extensions.vim
+++ b/autoload/airline/extensions.vim
@@ -138,7 +138,9 @@ function! airline#extensions#load()
     call airline#extensions#netrw#init(s:ext)
   endif
 
-  call airline#extensions#ycm#init(s:ext)
+  if exists(':YcmDiag')
+    call airline#extensions#ycm#init(s:ext)
+  endif
 
   if get(g:, 'loaded_vimfiler', 0)
     let g:vimfiler_force_overwrite_statusline = 0