diff --git a/packages/frontend/src/components/MkStreamingNotesTimeline.vue b/packages/frontend/src/components/MkStreamingNotesTimeline.vue
index 5ecbf2c7e5..1ccfc2f770 100644
--- a/packages/frontend/src/components/MkStreamingNotesTimeline.vue
+++ b/packages/frontend/src/components/MkStreamingNotesTimeline.vue
@@ -239,7 +239,7 @@ watch(visibility, () => {
 		}, BACKGROUND_PAUSE_WAIT_SEC * 1000);
 	} else { // 'visible'
 		if (timerForSetPause) {
-			clearTimeout(timerForSetPause);
+			window.clearTimeout(timerForSetPause);
 			timerForSetPause = null;
 		} else {
 			isPausingUpdate = false;
diff --git a/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue b/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue
index 9458f90034..484629404c 100644
--- a/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue
+++ b/packages/frontend/src/components/MkStreamingNotificationsTimeline.vue
@@ -137,7 +137,7 @@ watch(visibility, () => {
 		}, BACKGROUND_PAUSE_WAIT_SEC * 1000);
 	} else { // 'visible'
 		if (timerForSetPause) {
-			clearTimeout(timerForSetPause);
+			window.clearTimeout(timerForSetPause);
 			timerForSetPause = null;
 		} else {
 			isPausingUpdate = false;