diff --git a/packages/backend/src/misc/check-https.ts b/packages/backend/src/misc/check-https.ts
index b33f019973..612032fe97 100644
--- a/packages/backend/src/misc/check-https.ts
+++ b/packages/backend/src/misc/check-https.ts
@@ -1,4 +1,4 @@
-export function checkHttps(url: string) {
-    return url.startsWith('https://') ||
-        (url.startsWith('http://') && process.env.NODE_ENV !== 'production');
+export function checkHttps(url: string): boolean {
+	return url.startsWith('https://') ||
+		(url.startsWith('http://') && process.env.NODE_ENV !== 'production');
 }