diff --git a/index.d.ts b/index.d.ts
index e43583b..fa9c800 100644
--- a/index.d.ts
+++ b/index.d.ts
@@ -53,7 +53,9 @@ export type Options = {
 	const throttle = pThrottle({
 		limit: 2,
 		interval: 1000,
-		onDelay: () => console.log('Reached interval limit, call is delayed'),
+		onDelay: () => {
+			console.log('Reached interval limit, call is delayed');
+		},
 	});
 
 	const throttled = throttle(() => console.log('Executing...'));
diff --git a/readme.md b/readme.md
index cc88cbc..3dbcf4c 100644
--- a/readme.md
+++ b/readme.md
@@ -89,7 +89,9 @@ import pThrottle from 'p-throttle';
 const throttle = pThrottle({
 	limit: 2,
 	interval: 1000,
-	onDelay: () => console.log('Reached the interval limit, the call is delayed'),
+	onDelay: () => {
+		console.log('Reached the interval limit, the call is delayed');
+	},
 });
 
 const throttled = throttle(() => console.log('Executing...'));