diff --git a/src/app.js b/src/app.js
index 85e2329b3e..bb146d5d05 100644
--- a/src/app.js
+++ b/src/app.js
@@ -152,9 +152,12 @@ const dnsSource =
 
 // Start the "Clean Cache" background task.
 const csgInstance = CacheStorageGroup.getInstance();
-setInterval(() => {
-	csgInstance.cleanup();
-}, 15 * 60 * 1000);
+setInterval(
+	() => {
+		csgInstance.cleanup();
+	},
+	15 * 60 * 1000
+);
 
 Promise.all(
 	dnsSource.map((query) => query(target.join(','))).concat(target.map(dns))
diff --git a/src/bridge.js b/src/bridge.js
index b1e48ab4cd..9443fec9f0 100644
--- a/src/bridge.js
+++ b/src/bridge.js
@@ -28,9 +28,12 @@ const distribute = (url, router) =>
 
 // Start the "Clean Cache" background task.
 const csgInstance = CacheStorageGroup.getInstance();
-setInterval(() => {
-	csgInstance.cleanup();
-}, 15 * 60 * 1000);
+setInterval(
+	() => {
+		csgInstance.cleanup();
+	},
+	15 * 60 * 1000
+);
 
 require('http')
 	.createServer()