diff --git a/front/src/EmbedFrame.vue b/front/src/EmbedFrame.vue
index db0a5499f..5f70c2d27 100644
--- a/front/src/EmbedFrame.vue
+++ b/front/src/EmbedFrame.vue
@@ -259,7 +259,7 @@ export default {
   name: 'App',
   components: { Logo },
   props: {
-    artistCover: { type: Object, required: false },
+    artistCover: { type: Object, required: false, default: () => { return null } }
   },
   data () {
     return {
diff --git a/front/src/components/audio/EmbedWizard.vue b/front/src/components/audio/EmbedWizard.vue
index b042b1009..1835d8b5e 100644
--- a/front/src/components/audio/EmbedWizard.vue
+++ b/front/src/components/audio/EmbedWizard.vue
@@ -113,7 +113,7 @@ export default {
   props: {
     type: { type: String, required: true },
     id: { type: Number, required: true },
-    cover: { type: Object, required: false },
+    cover: { type: Object, required: false, default: () => { return null } }
   },
   data () {
     const d = {