diff --git a/README.md b/README.md
index 9da0217..922015d 100644
--- a/README.md
+++ b/README.md
@@ -356,7 +356,9 @@ The documentation window's max height.
 
 Specify deprecated candidate should be marked as deprecated or not.
 
-Default: `true`
+This option is useful but disabled by default because sometimes, this option can break your terminal appearance.
+
+Default: `false`
 
 #### formatting.format (type: fun(entry: cmp.Entry, vim_item: vim.CompletedItem): vim.CompletedItem)
 
diff --git a/lua/cmp/config/default.lua b/lua/cmp/config/default.lua
index 598d62a..2245576 100644
--- a/lua/cmp/config/default.lua
+++ b/lua/cmp/config/default.lua
@@ -61,7 +61,7 @@ return function()
     mapping = {},
 
     formatting = {
-      deprecated = true,
+      deprecated = false,
       format = function(_, vim_item)
         return vim_item
       end,