diff --git a/lib/www/client/source/src/components/line-status.vue b/lib/www/client/source/src/components/line-status.vue
index 312f498..4e9bbf9 100644
--- a/lib/www/client/source/src/components/line-status.vue
+++ b/lib/www/client/source/src/components/line-status.vue
@@ -3,7 +3,7 @@
   <slot name="empty"></slot>
 </div>
 <div class="line-status" v-else-if="sequenceHref">
-  <router-link v-for="sequence in sequences"
+  <router-link v-for="sequence in sequences" :key="sequence.sequence"
     class="sequence"
     :class="sequence.status"
     :style="style(sequence)"
diff --git a/lib/www/client/source/src/views/Equipment.vue b/lib/www/client/source/src/views/Equipment.vue
index 4f3f8e1..89445d7 100644
--- a/lib/www/client/source/src/views/Equipment.vue
+++ b/lib/www/client/source/src/views/Equipment.vue
@@ -223,7 +223,7 @@
             <v-subheader v-if="!selectedItemHistory || !selectedItemHistory.length"
               class="justify-center"
             >No more history</v-subheader>
-            <v-card v-for="item in selectedItemHistory" class="mt-5">
+            <v-card v-for="(item, key) in selectedItemHistory" class="mt-5" :key="key">
               <v-card-title>{{selectedItem.kind}}</v-card-title>
               <v-card-subtitle class="text-caption">{{item.tstamp}}</v-card-subtitle>
               <v-card-text>
diff --git a/lib/www/client/source/src/views/QC.vue b/lib/www/client/source/src/views/QC.vue
index f8dd232..5b195d9 100644
--- a/lib/www/client/source/src/views/QC.vue
+++ b/lib/www/client/source/src/views/QC.vue
@@ -87,7 +87,7 @@
                 All passed
               </v-chip>
 
-              <v-chip v-for="label of item.labels"
+              <v-chip v-for="label of item.labels" :key="label"
                 class="mx-1"
                 small
                 :color="labels[label] && labels[label].view.colour"