diff --git a/docs/customizing-atom.md b/docs/customizing-atom.md
index 54648661b..1ac25fa77 100644
--- a/docs/customizing-atom.md
+++ b/docs/customizing-atom.md
@@ -107,7 +107,7 @@ namespaces: `core` and `editor`.
 - `whitespace`
   - `ensureSingleTrailingNewline`: Whether to reduce multiple newlines to one at the end of files
   - `removeTrailingWhitespace`: Enable/disable striping of whitespace at the end of lines (defaults to `true`)
-- `wrapGuide`
+- `wrap-guide`
   - `columns`: Array of hashes with a `pattern` and `column` key to match the
              the path of the current editor to a column position.