diff --git a/pkgs/ffigen/README.md b/pkgs/ffigen/README.md
index 5077f7139..b2438c3ff 100644
--- a/pkgs/ffigen/README.md
+++ b/pkgs/ffigen/README.md
@@ -747,7 +747,7 @@ objc-protocols:
   include:
     # Generates bindings for a specific protocol.
     - MyProtocol
-objc-category:
+objc-categories:
   include:
     # Generates bindings for a specific category.
     - MyCategory