diff --git a/packages/core/docs/guidelines/30-guidelines-scoped-elements.md b/packages/core/docs/guidelines/30-guidelines-scoped-elements.md
index e61fabae8..031361727 100644
--- a/packages/core/docs/guidelines/30-guidelines-scoped-elements.md
+++ b/packages/core/docs/guidelines/30-guidelines-scoped-elements.md
@@ -40,7 +40,7 @@ Since Scoped Elements changes tagnames under the hood, a tagname querySelector s
 like this:
 
 ```js
-this.querySelector(getTagName('lion-input', this.constructor.scopedElements));
+this.querySelector(this.constructor.getScopedTagName('lion-input', this.constructor.scopedElements));
 ```
 
 ## CSS selectors