diff --git a/src/admin/components/edition/item-edition-form.vue b/src/admin/components/edition/item-edition-form.vue
index e3437f3e7..8615ce6ae 100644
--- a/src/admin/components/edition/item-edition-form.vue
+++ b/src/admin/components/edition/item-edition-form.vue
@@ -468,6 +468,11 @@ 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;
+
+                            let oldThumbnail = this.item.thumbnail;
+                            if (item.document_type == 'attachment' && oldThumbnail != item.thumbnail )
+                                this.item.thumbnail = item.thumbnail;
+            
                         })
                         .catch(error => this.$console.error(error));
                     }
diff --git a/src/js/store/modules/item/actions.js b/src/js/store/modules/item/actions.js
index a4c26df7b..5d138c6f1 100644
--- a/src/js/store/modules/item/actions.js
+++ b/src/js/store/modules/item/actions.js
@@ -118,7 +118,9 @@ export const updateItemDocument = ({ commit }, { item_id, document, document_typ
             document: document,
             document_type: document_type
         }).then( res => {
-            commit('setItem', res.data);
+            let item = res.data;
+
+            commit('setItem', item);
             resolve( res.data );
         }).catch( error => { 
             reject({ error_message: error['response']['data'].error_message, errors: error['response']['data'].errors });