diff --git a/x-pack/plugins/endpoint/public/embeddables/resolver/store/middleware.ts b/x-pack/plugins/endpoint/public/embeddables/resolver/store/middleware.ts
index c7d8deda82273..a42b43ef5c40b 100644
--- a/x-pack/plugins/endpoint/public/embeddables/resolver/store/middleware.ts
+++ b/x-pack/plugins/endpoint/public/embeddables/resolver/store/middleware.ts
@@ -122,7 +122,7 @@ export const resolverMiddlewareFactory: MiddlewareFactory = context => {
           if (apiResults instanceof Error) {
             api.dispatch({
               type: 'serverFailedToReturnRelatedEventData',
-              payload: [results[0]],
+              payload: results[0],
             });
             continue;
           }
diff --git a/x-pack/plugins/endpoint/public/embeddables/resolver/types.ts b/x-pack/plugins/endpoint/public/embeddables/resolver/types.ts
index a87003c2330b9..071c35ea064cf 100644
--- a/x-pack/plugins/endpoint/public/embeddables/resolver/types.ts
+++ b/x-pack/plugins/endpoint/public/embeddables/resolver/types.ts
@@ -9,6 +9,7 @@ import { Store } from 'redux';
 import { ResolverAction } from './store/actions';
 export { ResolverAction } from './store/actions';
 import { ResolverEvent } from '../../../common/types';
+import { eventType } from '../../../common/models/event';
 
 /**
  * Redux state for the Resolver feature. Properties on this interface are populated via multiple reducers using redux's `combineReducers`.
@@ -137,7 +138,7 @@ export type CameraState = {
 export interface RelatedEventDataEntry {
   relatedEvents: Array<{
     relatedEvent: ResolverEvent;
-    relatedEventType: string;
+    relatedEventType: ReturnType<typeof eventType>;
   }>;
 }