diff --git a/patterns/portal-header.html b/patterns/portal-header.html
index 6333024..0f30858 100644
--- a/patterns/portal-header.html
+++ b/patterns/portal-header.html
@@ -45,7 +45,7 @@
             </div>
           </div>
 
-          <nav class="sg-portal-header__tabs sg-tab-button-group" aria-label="Hauptnavigation" data-component="tab-navigation" data-component-context="portal-header" data-pattern-part="portal-header-navigation">
+          <nav class="sg-portal-header__tabs sg-tab-button-group" aria-label="Hauptnavigation" data-component="tab-navigation" data-component-size="large" data-component-context="portal-header" data-pattern-part="portal-header-navigation">
             <button class="sg-interaction-element sg-button sg-tab-button" type="button" aria-selected="false" data-component-part="tab-button" data-component-state="inactive">Updates</button>
             <button class="sg-interaction-element sg-button sg-tab-button" type="button" aria-selected="true" data-component-part="tab-button" data-component-state="active">Titel</button>
             <button class="sg-interaction-element sg-button sg-tab-button" type="button" aria-selected="false" data-component-part="tab-button" data-component-state="inactive">Gruppen</button>
@@ -83,7 +83,7 @@
             </div>
           </div>
 
-          <nav class="sg-portal-header__tabs sg-tab-button-group" aria-label="Hauptnavigation" data-component="tab-navigation" data-component-context="portal-header" data-pattern-part="portal-header-navigation">
+          <nav class="sg-portal-header__tabs sg-tab-button-group" aria-label="Hauptnavigation" data-component="tab-navigation" data-component-size="large" data-component-context="portal-header" data-pattern-part="portal-header-navigation">
             <button class="sg-interaction-element sg-button sg-tab-button" type="button" aria-selected="false" data-component-part="tab-button" data-component-state="inactive">Updates</button>
             <button class="sg-interaction-element sg-button sg-tab-button" type="button" aria-selected="true" data-component-part="tab-button" data-component-state="active">Titel</button>
             <button class="sg-interaction-element sg-button sg-tab-button" type="button" aria-selected="false" data-component-part="tab-button" data-component-state="inactive">Gruppen</button>