diff --git a/src/components/ActivityEntry.vue b/src/components/ActivityEntry.vue
index b4117bd15..3b46de993 100644
--- a/src/components/ActivityEntry.vue
+++ b/src/components/ActivityEntry.vue
@@ -79,7 +79,7 @@ export default {
 				parameters.after.name = moment(dateTime).format('L LTS')
 			}
 
-			Object.keys(parameters).map(function(key, index) {
+			Object.keys(parameters).forEach(function(key, index) {
 				const { type } = parameters[key]
 				switch (type) {
 				case 'highlight':
diff --git a/src/components/card/CommentForm.vue b/src/components/card/CommentForm.vue
index 69714b66b..aae2acca4 100644
--- a/src/components/card/CommentForm.vue
+++ b/src/components/card/CommentForm.vue
@@ -28,11 +28,11 @@
 				:members="members"
 				name-key="uid"
 				:tab-select="true">
-				<template v-slot:item="s">
+				<template #item="s">
 					<Avatar class="atwho-li--avatar" :user="s.item.uid" :size="24" />
 					<span class="atwho-li--name" v-text="s.item.displayname" />
 				</template>
-				<template v-slot:embeddedItem="scope">
+				<template #embeddedItem="scope">
 					<span>
 						<UserBubble v-if="scope.current.uid"
 							:data-mention-id="scope.current.uid"
diff --git a/src/components/cards/AvatarList.vue b/src/components/cards/AvatarList.vue
index 66db5c194..10a27c25d 100644
--- a/src/components/cards/AvatarList.vue
+++ b/src/components/cards/AvatarList.vue
@@ -72,7 +72,7 @@ export default {
 	props: {
 		users: {
 			type: Array,
-			default: () => { return {} },
+			default: () => ([]),
 		},
 	},
 	data() {
@@ -132,7 +132,7 @@ export default {
 		margin-top: 5px;
 		position: relative;
 		flex-grow: 1;
-		/deep/ .popovermenu {
+		::v-deep .popovermenu {
 			margin-right: -4px;
 			img {
 				padding: 0;
@@ -152,7 +152,7 @@ export default {
 		padding-right: $avatar-offset;
 		flex-direction: row-reverse;
 		.avatardiv,
-		/deep/ .avatardiv {
+		::v-deep .avatardiv {
 			width: 36px;
 			height: 36px;
 			box-sizing: content-box !important;
@@ -167,7 +167,7 @@ export default {
 				cursor: pointer;
 			}
 		}
-		&:hover div:nth-child(n+2) /deep/ .avatardiv {
+		&:hover div:nth-child(n+2) ::v-deep .avatardiv {
 			margin-right: 1px;
 		}
 	}
diff --git a/src/components/navigation/AppNavigationBoard.vue b/src/components/navigation/AppNavigationBoard.vue
index 06e1b4a1c..9fa05c906 100644
--- a/src/components/navigation/AppNavigationBoard.vue
+++ b/src/components/navigation/AppNavigationBoard.vue
@@ -149,6 +149,9 @@ export default {
 	directives: {
 		ClickOutside,
 	},
+	inject: [
+		'boardApi',
+	],
 	props: {
 		board: {
 			type: Object,
@@ -303,9 +306,6 @@ export default {
 			this.updateDueSetting = null
 		},
 	},
-	inject: [
-		'boardApi',
-	],
 }
 </script>
 
diff --git a/src/mixins/color.js b/src/mixins/color.js
index e64b1de33..dbf58cc51 100644
--- a/src/mixins/color.js
+++ b/src/mixins/color.js
@@ -1,4 +1,4 @@
-/*
+/**
  * @copyright Copyright (c) 2018 Julius Härtl <jus@bitgrid.net>
  *
  * @author Julius Härtl <jus@bitgrid.net>
@@ -84,7 +84,7 @@ export default {
 		},
 		colorIsValid(hex) {
 
-			const re = new RegExp('[A-Fa-f0-9]{6}')
+			const re = /[A-Fa-f0-9]{6}/
 			if (re.test(hex)) {
 				return true
 			}
diff --git a/src/views/Dashboard.vue b/src/views/Dashboard.vue
index 6e4960127..8e16ac632 100644
--- a/src/views/Dashboard.vue
+++ b/src/views/Dashboard.vue
@@ -29,7 +29,7 @@
 		:loading="loading"
 		@hide="() => {}"
 		@markDone="() => {}">
-		<template v-slot:default="{ item }">
+		<template #default="{ item }">
 			<a :key="item.id"
 				:href="cardLink(item)"
 				target="_blank"