diff --git a/doc/faq.md b/doc/faq.md
index ccffcdce45..f7d0d91e1d 100644
--- a/doc/faq.md
+++ b/doc/faq.md
@@ -393,7 +393,7 @@ const map = new Map({
 })
 
 const sizeObserver = new ResizeObserver(() => {
-  this.map.updateSize()
+  map.updateSize()
 })
 sizeObserver.observe(mapElement)