diff --git a/apps/nowcasting-app/components/map/measuringUnit.tsx b/apps/nowcasting-app/components/map/measuringUnit.tsx
index 5b3c64d7..b7f4d3cc 100644
--- a/apps/nowcasting-app/components/map/measuringUnit.tsx
+++ b/apps/nowcasting-app/components/map/measuringUnit.tsx
@@ -1,6 +1,7 @@
 import { Dispatch, MouseEvent as ReactMouseEvent, SetStateAction } from "react";
 import { ActiveUnit, NationalAggregation } from "./types";
 import useGlobalState from "../helpers/globalState";
+import * as Sentry from "@sentry/nextjs";
 
 const MeasuringUnit = ({
   activeUnit,
@@ -24,8 +25,15 @@ const MeasuringUnit = ({
     aggregation: NationalAggregation
   ) => {
     event.preventDefault();
+    Sentry.captureMessage("Event: Aggregation level changed", {
+      extra: {
+        eventType: "UserAction",
+        aggregation,
+        timestamp: new Date().getTime() // Just to make the event unique
+      }
+    });
     setNationalAggregation(aggregation);
-    console.log("aggregation", aggregation);
+    console.log("sent event to Sentry: aggregation", aggregation);
   };
   const buttonClasses =
     "relative inline-flex items-center px-3 py-0.5 text-sm dash:text-lg dash:tracking-wide font-extrabold hover:bg-ocf-yellow border-gray-600";
diff --git a/apps/nowcasting-app/sentry.client.config.js b/apps/nowcasting-app/sentry.client.config.js
index 0a81eb40..c90d55a0 100644
--- a/apps/nowcasting-app/sentry.client.config.js
+++ b/apps/nowcasting-app/sentry.client.config.js
@@ -39,13 +39,16 @@ Sentry.init({
   // sessions when an error occurs.
   replaysOnErrorSampleRate: 1.0,
 
-  integrations: [
-    Sentry.replayIntegration({
-      // Additional SDK configuration goes in here, for example:
-      maskAllText: true,
-      blockAllMedia: true
-    })
-  ],
+  integrations: (integrations) => {
+    return [
+      ...integrations,
+      Sentry.replayIntegration({
+        // Additional SDK configuration goes in here, for example:
+        maskAllText: true,
+        blockAllMedia: true
+      })
+    ].filter((integration) => integration.name !== "Dedupe");
+  },
   environment: process.env.NEXT_PUBLIC_SENTRY_ENV_LABEL || process.env.NODE_ENV
   // ...
   // Note: if you want to override the automatic release value, do not set a