diff --git a/ionic/ionic.d.ts b/ionic/ionic.d.ts
index eba0ef6d4..b1b215217 100644
--- a/ionic/ionic.d.ts
+++ b/ionic/ionic.d.ts
@@ -16,7 +16,7 @@ declare module ionic {
             cancelText?: string;
             destructiveText?: string;
             cancel?: ()=>any;
-            buttonClicked?: ()=>any;
+            buttonClicked?: (index: any)=>any;
             destructiveButtonClicked?: ()=>any;
             cancelOnStateChange?: boolean;
             cssClass?: string;