diff --git a/src/client/app/common/views/components/post-form-attaches.vue b/src/client/app/common/views/components/post-form-attaches.vue
index 1fe476be77..37422ba108 100644
--- a/src/client/app/common/views/components/post-form-attaches.vue
+++ b/src/client/app/common/views/components/post-form-attaches.vue
@@ -32,7 +32,7 @@ export default Vue.extend({
 
 	props: {
 		files: {
-			type: Object,
+			type: Array,
 			required: true
 		},
 		detachMediaFn: {
diff --git a/src/client/app/common/views/widgets/post-form.vue b/src/client/app/common/views/widgets/post-form.vue
index 120de0f17b..d8617bea58 100644
--- a/src/client/app/common/views/widgets/post-form.vue
+++ b/src/client/app/common/views/widgets/post-form.vue
@@ -21,7 +21,7 @@
 					<fa :icon="['far', 'laugh']"/>
 				</button>
 			</div>
-			<x-post-form-attaches class="files" :files="files" :detachMediaFn="detachMedia"/>
+			<x-post-form-attaches class="files" :files="files" :detach-media-fn="detachMedia"/>
 			<input ref="file" type="file" multiple="multiple" tabindex="-1" @change="onChangeFile"/>
 			<mk-uploader ref="uploader" @uploaded="attachMedia"/>
 			<footer>