diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/content-type/workspace/views/design/content-type-design-editor.element.ts b/src/Umbraco.Web.UI.Client/src/packages/core/content-type/workspace/views/design/content-type-design-editor.element.ts
index 02bfa20407..1d936f30fe 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/content-type/workspace/views/design/content-type-design-editor.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/content-type/workspace/views/design/content-type-design-editor.element.ts
@@ -492,7 +492,7 @@ export class UmbContentTypeDesignEditorElement extends UmbLitElement implements
 			label=${this.localize.term('actions_remove')}
 			class="trash"
 			slot="append"
-			@click=${(e) => {
+			@click=${(e: MouseEvent) => {
 				e.stopPropagation();
 				e.preventDefault();
 				this.#requestRemoveTab(tab);