diff --git a/lua/cmp-setup.lua b/lua/cmp-setup.lua
index 885fa6f..3ccd00c 100644
--- a/lua/cmp-setup.lua
+++ b/lua/cmp-setup.lua
@@ -17,7 +17,7 @@ cmp.setup {
   mapping = cmp.mapping.preset.insert {
     ['<C-n>'] = cmp.mapping.select_next_item(),
     ['<C-p>'] = cmp.mapping.select_prev_item(),
-    ['<C-d>'] = cmp.mapping.scroll_docs(-4),
+    ['<C-b>'] = cmp.mapping.scroll_docs(-4),
     ['<C-f>'] = cmp.mapping.scroll_docs(4),
     ['<C-Space>'] = cmp.mapping.complete {},
     ['<CR>'] = cmp.mapping.confirm {