diff --git a/packages/frontend/src/ui/_common_/statusbar-rss.vue b/packages/frontend/src/ui/_common_/statusbar-rss.vue
index 2ae8eb9889..1c4c29769a 100644
--- a/packages/frontend/src/ui/_common_/statusbar-rss.vue
+++ b/packages/frontend/src/ui/_common_/statusbar-rss.vue
@@ -30,6 +30,7 @@ SPDX-License-Identifier: AGPL-3.0-only
 import { ref } from 'vue';
 import * as Misskey from 'misskey-js';
 import { useInterval } from '@@/js/use-interval.js';
+import { url as baseUrl } from '@@/js/config.js';
 import MkMarqueeText from '@/components/MkMarqueeText.vue';
 import { shuffle } from '@/utility/shuffle.js';
 
@@ -55,7 +56,7 @@ const tick = () => {
 			}
 			items.value = feed.items.filter((item) => {
 				if (!item.link) return false;
-				const itemUrl = new URL(item.link);
+				const itemUrl = new URL(item.link, baseUrl);
 				return ['http:', 'https:'].includes(itemUrl.protocol);
 			});
 			fetching.value = false;
diff --git a/packages/frontend/src/widgets/WidgetRss.vue b/packages/frontend/src/widgets/WidgetRss.vue
index f561f204f6..9cc5d8ad39 100644
--- a/packages/frontend/src/widgets/WidgetRss.vue
+++ b/packages/frontend/src/widgets/WidgetRss.vue
@@ -83,7 +83,7 @@ const tick = () => {
 		.then((feed: Misskey.entities.FetchRssResponse) => {
 			rawItems.value = feed.items.filter((item) => {
 				if (!item.link) return false;
-				const itemUrl = new URL(item.link);
+				const itemUrl = new URL(item.link, base);
 				return ['http:', 'https:'].includes(itemUrl.protocol);
 			});
 			fetching.value = false;
diff --git a/packages/frontend/src/widgets/WidgetRssTicker.vue b/packages/frontend/src/widgets/WidgetRssTicker.vue
index 2cff5a099b..7b0ee60e63 100644
--- a/packages/frontend/src/widgets/WidgetRssTicker.vue
+++ b/packages/frontend/src/widgets/WidgetRssTicker.vue
@@ -123,7 +123,7 @@ const tick = () => {
 		.then((feed: Misskey.entities.FetchRssResponse) => {
 			rawItems.value = feed.items.filter((item) => {
 				if (!item.link) return false;
-				const itemUrl = new URL(item.link);
+				const itemUrl = new URL(item.link, base);
 				return ['http:', 'https:'].includes(itemUrl.protocol);
 			});
 			fetching.value = false;