diff --git a/src/views/admin/components/edition/item-edition-form.vue b/src/views/admin/components/edition/item-edition-form.vue
index ffb8a02aa..ddcbcb736 100644
--- a/src/views/admin/components/edition/item-edition-form.vue
+++ b/src/views/admin/components/edition/item-edition-form.vue
@@ -316,7 +316,7 @@
                                         class="image">
                                     <span 
                                             class="image-placeholder"
-                                            v-if="item.document_type == 'empty'">
+                                            v-if="item.document_type == 'empty' && item.document_mimetype == 'empty'">
                                         {{ $i18n.get('label_empty_thumbnail') }}
                                     </span>
                                     <img
@@ -1235,6 +1235,7 @@ export default {
             this.updateItemDocument({ item_id: this.itemId, document: this.form.document, document_type: this.form.document_type })
             .then(item => {
                 this.item.document_as_html = item.document_as_html;
+                this.item.document_mimetype = item.document_mimetype;
                 this.isLoading = false;
             })
             .catch((errors) => {
@@ -1266,6 +1267,7 @@ export default {
             this.updateItemDocument({ item_id: this.itemId, document: this.form.document, document_type: this.form.document_type })
                 .then(item => {
                     this.item.document_as_html = item.document_as_html;
+                    this.item.document_mimetype = item.document_mimetype;
                     this.isLoading = false;
 
                     let oldThumbnail = this.item.thumbnail;
@@ -1301,6 +1303,7 @@ export default {
                 document_type: this.form.document_type
             })
             .then(() => {
+                this.item.document_mimetype = 'empty';
                 this.isLoadingAttachments = true;
                 this.fetchAttachments({
                     page: 1,
@@ -1385,6 +1388,7 @@ export default {
                         .then((item) => {
                             this.isLoading = false;
                             this.item.document_as_html = item.document_as_html;
+                            this.item.document_mimetype = item.document_mimetype;
 
                             let oldThumbnail = this.item.thumbnail;
                             if (item.document_type == 'attachment' && oldThumbnail != item.thumbnail )