diff --git a/README.md b/README.md
index 3e2d0aa..282b27a 100644
--- a/README.md
+++ b/README.md
@@ -756,7 +756,7 @@ Every single built-in component's props can be dynamically extended using any on
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 ```
 
-If used, **a callback prop must return an valid object**, even if it's an empty one.
+If used, **a callback prop must return a valid object**, even if it's an empty one.
 
 These callbacks are executed with each render of the element with four parameters: