diff --git a/README.md b/README.md
index 34b2205..b6bfb19 100644
--- a/README.md
+++ b/README.md
@@ -94,13 +94,17 @@ JSXSpreadAttribute :
 
 JSXAttribute :

 
-- JSXAttributeName `=` JSXAttributeValue
+- JSXAttributeName JSXAttributeInitializer<sub>opt</sub>
 
 JSXAttributeName :
 
 - JSXIdentifier
 - JSXNamespacedName
 
+JSXAttributeInitializer :

+
+- `=` JSXAttributeValue
+
 JSXAttributeValue :

 
 - `"` JSXDoubleStringCharacters<sub>opt</sub> `"`