diff --git a/src/components/TimelineEntry.vue b/src/components/TimelineEntry.vue
index b5862b30..e635ccd5 100644
--- a/src/components/TimelineEntry.vue
+++ b/src/components/TimelineEntry.vue
@@ -1,7 +1,7 @@
 <template>
 	<div class="timeline-entry">
 		<div v-if="item.type === 'Announce'" class="boost">
-			<span class="icon-boost"></span>
+			<span class="icon-boost" />
 			<router-link v-if="item.actor_info" :to="{ name: 'profile', params: { account: item.local ? item.actor_info.preferredUsername : item.actor_info.account }}">
 				<span v-tooltip.bottom="item.actor_info.account" class="post-author">
 					{{ userDisplayName(item.actor_info) }}
diff --git a/src/store/timeline.js b/src/store/timeline.js
index b532ab86..accf5a7b 100644
--- a/src/store/timeline.js
+++ b/src/store/timeline.js
@@ -55,18 +55,18 @@ const mutations = {
 		state.account = account
 	},
 	boostPost(state, { post, parentAnnounce }) {
-		if (!typeof state.timeline[post.id] === 'undefined') {
+		if (typeof state.timeline[post.id] !== 'undefined') {
 			Vue.set(state.timeline[post.id].action.values, 'boosted', true)
 		}
-		if (parentAnnounce) {
+		if (typeof parentAnnounce.id !== 'undefined') {
 			Vue.set(state.timeline[parentAnnounce.id].cache[parentAnnounce.object].object.action.values, 'boosted', true)
 		}
 	},
 	unboostPost(state, { post, parentAnnounce }) {
-		if (!typeof state.timeline[post.id] === 'undefined') {
+		if (typeof state.timeline[post.id] !== 'undefined') {
 			Vue.set(state.timeline[post.id].action.values, 'boosted', false)
 		}
-		if (parentAnnounce) {
+		if (typeof parentAnnounce.id !== 'undefined') {
 			Vue.set(state.timeline[parentAnnounce.id].cache[parentAnnounce.object].object.action.values, 'boosted', false)
 		}
 	}