diff --git a/x-pack/plugins/apm/public/components/app/RumDashboard/UXMetrics/index.tsx b/x-pack/plugins/apm/public/components/app/RumDashboard/UXMetrics/index.tsx
index 4c93ebd49b407..5f23ebf5c6e56 100644
--- a/x-pack/plugins/apm/public/components/app/RumDashboard/UXMetrics/index.tsx
+++ b/x-pack/plugins/apm/public/components/app/RumDashboard/UXMetrics/index.tsx
@@ -26,7 +26,7 @@ import { useFetcher } from '../../../../hooks/useFetcher';
 
 export interface UXMetrics {
   cls: string;
-  fid: string;
+  fid: number;
   lcp: string;
   tbt: number;
   fcp: number;