diff --git a/packages/backend/src/remote/activitypub/misc/ld-signature.ts b/packages/backend/src/remote/activitypub/misc/ld-signature.ts
index 946914bfaa..3b799c755c 100644
--- a/packages/backend/src/remote/activitypub/misc/ld-signature.ts
+++ b/packages/backend/src/remote/activitypub/misc/ld-signature.ts
@@ -24,7 +24,7 @@ export class LdSignature {
 		} as {
 			type: string;
 			creator: string;
-			domain: string;
+			domain?: string;
 			nonce: string;
 			created: string;
 		};
@@ -114,7 +114,7 @@ export class LdSignature {
 				Accept: 'application/ld+json, application/json',
 			},
 			timeout: this.loderTimeout,
-			agent: u => u.protocol == 'http:' ? httpAgent : httpsAgent,
+			agent: u => u.protocol === 'http:' ? httpAgent : httpsAgent,
 		}).then(res => {
 			if (!res.ok) {
 				throw `${res.status} ${res.statusText}`;