diff --git a/autoload/SpaceVim/layers/lang/c.vim b/autoload/SpaceVim/layers/lang/c.vim
index 20d07d818..6fb28facd 100644
--- a/autoload/SpaceVim/layers/lang/c.vim
+++ b/autoload/SpaceVim/layers/lang/c.vim
@@ -9,7 +9,7 @@
 function! SpaceVim#layers#lang#c#plugins() abort
     let plugins = []
     if has('nvim')
-        call add(plugins, ['zchee/deoplete-clang'])
+        call add(plugins, ['tweekmonster/deoplete-clang2'])
     else
         call add(plugins, ['Rip-Rip/clang_complete'])
     endif
diff --git a/config/plugins/deoplete.vim b/config/plugins/deoplete.vim
index 9baf62b26..ee511fbcd 100644
--- a/config/plugins/deoplete.vim
+++ b/config/plugins/deoplete.vim
@@ -17,7 +17,9 @@ let g:deoplete#omni_patterns = get(g:, 'deoplete#omni_patterns', {})
 let g:deoplete#omni_patterns.php = '->\|::'
 let g:deoplete#ignore_sources = {}
 let g:deoplete#ignore_sources.go = ['omni']
+let g:deoplete#ignore_sources.c = ['omni']
 call deoplete#custom#set('go', 'mark', '')
+call deoplete#custom#set('clang2', 'mark', '')
 if g:spacevim_enable_javacomplete2_py
     let g:deoplete#ignore_sources.java = ['omni']
     call deoplete#custom#set('javacomplete2', 'mark', '')