diff --git a/src/activitypub/mocks.js b/src/activitypub/mocks.js
index e1e2e0f581..686196aef2 100644
--- a/src/activitypub/mocks.js
+++ b/src/activitypub/mocks.js
@@ -29,6 +29,9 @@ const sanitizeConfig = {
 	allowedClasses: {
 		'*': [],
 	},
+	allowedAttributes: {
+		a: ['href', 'rel'],
+	},
 };
 
 Mocks.profile = async (actors, hostMap) => {