diff --git a/doc/import-cost.txt b/doc/import-cost.txt
index f727d4a..c9cbd09 100644
--- a/doc/import-cost.txt
+++ b/doc/import-cost.txt
@@ -17,16 +17,15 @@ SETUP                                                     *import-cost.setup()*
 >lua
     require('import-cost').setup(config)
 <
-Module setup.
-
 Parameters: ~
 
-    {config} `(table)`: Table containing configuration for import-cost.
+    {config} `(table | nil)`: (Optional) table containing configuration for
+                            import-cost. Defaults shown below.
 
 Usage: ~
 >lua
     require('import-cost').setup({
-        -- Filetype to attach to
+        -- Filetypes to attach to
         filetypes = {
             'javascript',
             'javascriptreact',
@@ -35,8 +34,8 @@ Usage: ~
         },
         format = {
             -- Format string for bytes/kilobytes in virtual text
-            byte_format = '%.2f b',
-            kb_format = '%.2f kb',
+            byte_format = '%.1fb',
+            kb_format = '%.1fk',
             -- Virtual text format (remove second "%s" to ignore gzipped size)
             virtual_text = '%s (gzipped: %s)',
         },
diff --git a/readme.md b/readme.md
index bebd641..d75f419 100644
--- a/readme.md
+++ b/readme.md
@@ -28,7 +28,7 @@ require('lazy').setup {
 
 ## Configuration
 
-Configure via the setup function (or just use the defaults):
+Configure via the setup function (or use the defaults with no arguments):
 
 ```lua
 require('import-cost').setup(opts)
@@ -37,6 +37,7 @@ require('import-cost').setup(opts)
 See `:h import-cost` for more information
 
 ## TODO
+
 1. CommonJS support
 
 ## Acknowledgements
@@ -45,5 +46,4 @@ See `:h import-cost` for more information
    backend that calculates the import costs
 2. [import-cost](https://marketplace.visualstudio.com/items?itemName=wix.vscode-import-cost):
    the original VSCode plugin that started it all
-3. [vim-import-cost](https://github.com/yardnsm/vim-import-cOst): showed me it
-   was possible to do in neovim!
+3. [vim-import-cost](https://github.com/yardnsm/vim-import-cOst): inspired me to do it in neovim!