diff --git a/vue-analytics.d.ts b/vue-analytics.d.ts
index e9a28c6..eb5d199 100644
--- a/vue-analytics.d.ts
+++ b/vue-analytics.d.ts
@@ -7,9 +7,9 @@ declare module 'vue-analytics' {
     (category: string, action?: string, label?: string, value?: number): void;
     (options: {
       eventCategory: string,
-      eventAction: string,
-      eventLabel: string,
-      eventValue: number
+      eventAction?: string,
+      eventLabel?: string,
+      eventValue?: number
     }): void;
   }