diff --git a/README.md b/README.md
index 15731a92..98301ad9 100644
--- a/README.md
+++ b/README.md
@@ -30,8 +30,11 @@ import sharp from 'sharp';
 sharp(inputBuffer)
   .resize(320, 240)
   .toFile('output.webp', (err, info) => ... );
+  // A Promises/A+ promise is returned when callback is not provided.
 ```
 
+
+
 ```javascript
 sharp('input.jpg')
   .rotate()