diff --git a/src/components/alert/alert-options.ts b/src/components/alert/alert-options.ts
index 74c9804ba5..39cd2e8030 100644
--- a/src/components/alert/alert-options.ts
+++ b/src/components/alert/alert-options.ts
@@ -27,5 +27,6 @@ export interface AlertInputOptions {
 export interface AlertButton {
   text?: string;
   role?: string;
+  cssClass?: string;
   handler?: Function;
 };