diff --git a/Customization.md b/Customization.md
index 2be33b1..ef0b28d 100644
--- a/Customization.md
+++ b/Customization.md
@@ -240,7 +240,7 @@ Example: `{"index": {"multiVersion": 1, "multiVersionBlacklist": ["^/usr/include
 
 #### `index.initialBlacklist`
 
-Default: _empty_
+Default: `[]`
 
 A list of regular expressions matching files that should not be indexed when
 the `ccls` server starts up, but will still be indexed if a client opens them.
@@ -253,7 +253,9 @@ parsing operations when performing quick edits on large projects.
 Be aware that you will not have access to full cross-referencing information
 in this situation.
 
-Example: `{"index": {"initialBlacklist": "."}}` (matches all files)
+If `index.initialWhitelist` is also specified, the whitelist takes precedence.
+
+Example: `{"index": {"initialBlacklist": ["."]}}` (matches all files)
 
 #### `index.onChange`