diff --git a/templates/widget/index.ts b/templates/widget/index.ts
index 7b4ffbd5..ddca5da3 100644
--- a/templates/widget/index.ts
+++ b/templates/widget/index.ts
@@ -55,7 +55,7 @@ export const solveCaptchaRunner = async (e: Event): Promise<void> => {
     worker.onmessage = async (event: MessageEvent) => {
       const resp: ServiceWorkerWork = event.data;
       console.log(
-        `Proof generated. Difficuly: ${config.difficulty_factor} Duration: ${resp.duration}`
+        `Proof generated. Difficuly: ${config.difficulty_factor} Duration: ${resp.work.time}`
       );
 
       const proof: Work = {
@@ -63,7 +63,7 @@ export const solveCaptchaRunner = async (e: Event): Promise<void> => {
         string: config.string,
         nonce: resp.work.nonce,
         result: resp.work.result,
-        time: resp.work.time,
+        time: Math.trunc(resp.work.time),
         worker_type: resp.work.worker_type,
       };
 
diff --git a/templates/widget/service-worker.ts b/templates/widget/service-worker.ts
index 00975bad..0b350071 100644
--- a/templates/widget/service-worker.ts
+++ b/templates/widget/service-worker.ts
@@ -19,15 +19,9 @@ onmessage = async (e) => {
   console.debug("message received at worker");
   const config: PoWConfig = e.data;
 
-  const t0 = performance.now();
   const work = await prove(config);
-
-  const t1 = performance.now();
-  const duration = t1 - t0;
-
   const res: ServiceWorkerWork = {
     work,
-    duration,
   };
 
   postMessage(res);
diff --git a/templates/widget/types.ts b/templates/widget/types.ts
index efc91596..32da1490 100644
--- a/templates/widget/types.ts
+++ b/templates/widget/types.ts
@@ -32,7 +32,6 @@ export type WasmWork = {
 
 export type ServiceWorkerWork = {
   work: SubmitWork;
-  duration: number;
 };
 
 export type PoWConfig = {