diff --git a/.exp-coc-config b/.exp-coc-config
index f0454d5..7424ac4 100644
--- a/.exp-coc-config
+++ b/.exp-coc-config
@@ -23,20 +23,6 @@ set shortmess+=c
 " diagnostics appear/become resolved.
 "set signcolumn=yes
 
-" Use tab for trigger completion with characters ahead and navigate.
-" NOTE: Use command ':verbose imap <tab>' to make sure tab is not mapped by
-" other plugin before putting this into your config.
-inoremap <silent><expr> <TAB>
-      \ pumvisible() ? "\<C-n>" :
-      \ <SID>check_back_space() ? "\<TAB>" :
-      \ coc#refresh()
-inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"
-
-function! s:check_back_space() abort
-  let col = col('.') - 1
-  return !col || getline('.')[col - 1]  =~# '\s'
-endfunction
-
 " Use <c-space> to trigger completion.
 if has('nvim')
   inoremap <silent><expr> <c-space> coc#refresh()
diff --git a/.vimrc.bundles b/.vimrc.bundles
index 70a0ab3..b2db89b 100644
--- a/.vimrc.bundles
+++ b/.vimrc.bundles
@@ -186,6 +186,10 @@ endif
         " coc-clangd: c/c++, may need to install clangd seperatly
         let g:coc_global_extensions = ['coc-pyright', 'coc-rls', 'coc-clangd', 'coc-tsserver', 'coc-html', 'coc-cmake', 'coc-json', 'coc-sh']
 
+        let g:coc_user_config = {
+        \   'suggest.noselect': v:true,
+        \   'suggest.enablePreselect': v:false }
+
         if filereadable(expand(config_dir . "/.exp-coc-config"))
             exec "source " . config_dir . "/.exp-coc-config"
         endif
diff --git a/config/coc/setting.json b/config/coc/setting.json
new file mode 100644
index 0000000..49a5b69
--- /dev/null
+++ b/config/coc/setting.json
@@ -0,0 +1,4 @@
+{
+    "suggest.noselect": true,
+    "suggest.enablePreselect": false
+}