diff --git a/src/client/sw/sw.ts b/src/client/sw/sw.ts
index 7a0ba30d91..03eb11353f 100644
--- a/src/client/sw/sw.ts
+++ b/src/client/sw/sw.ts
@@ -119,7 +119,7 @@ self.addEventListener('notificationclick', <K extends keyof pushNotificationData
 		case 'notification':
 			switch (action) {
 				case 'follow':
-					await swos.api('following/create', id, { userId: data.body.userId });
+					if ('userId' in data.body)await swos.api('following/create', id, { userId: data.body.userId });
 					break;
 				case 'showUser':
 					if ('user' in data.body) client = await swos.openUser(getAcct(data.body.user), id);