diff --git a/addons/web_editor/static/src/js/wysiwyg/widgets/media.js b/addons/web_editor/static/src/js/wysiwyg/widgets/media.js
index 5a56faea8db..44f34ee7035 100644
--- a/addons/web_editor/static/src/js/wysiwyg/widgets/media.js
+++ b/addons/web_editor/static/src/js/wysiwyg/widgets/media.js
@@ -418,7 +418,7 @@ var FileWidget = SearchableMediaWidget.extend({
         var attachments = this.attachments.slice(0, this.numberOfAttachmentsToDisplay);
 
         // Render menu & content
-        this.$('.existing-attachments').replaceWith(
+        this.$('.o_we_existing_attachments').replaceWith(
             this._renderExisting(attachments)
         );
 
diff --git a/addons/web_editor/static/src/xml/wysiwyg.xml b/addons/web_editor/static/src/xml/wysiwyg.xml
index abd2e940824..75056ec4a1e 100644
--- a/addons/web_editor/static/src/xml/wysiwyg.xml
+++ b/addons/web_editor/static/src/xml/wysiwyg.xml
@@ -98,7 +98,7 @@
         <form>
             <t t-call="wysiwyg.widgets.files.submenu"/>
             <div class="form-text o_we_error_text"/>
-            <div class="existing-attachments"/>
+            <div class="o_we_existing_attachments"/>
             <div class="mt-4 text-center mx-auto">
                 <button class="btn btn-primary o_load_more" type="button">Load more...</button>
                 <div class="mt-4 o_load_done_msg d-none">
@@ -243,8 +243,8 @@
     </t>
 
     <t t-name="wysiwyg.widgets.image.existing.attachments">
-        <div class="o_we_images">
-            <ol class="existing-attachments d-flex flex-wrap mx-auto my-0 p-2">
+        <div class="o_we_existing_attachments o_we_images">
+            <ol class="d-flex flex-wrap mx-auto my-0 p-2">
                 <t t-foreach="attachments" t-as="attachment">
                     <t t-call="wysiwyg.widgets.image.existing.attachment"/>
                 </t>
@@ -263,8 +263,8 @@
     </t>
 
     <t t-name="wysiwyg.widgets.document.existing.attachments">
-        <div class="o_we_documents">
-            <div class="row mx-auto existing-attachments">
+        <div class="o_we_existing_attachments o_we_documents">
+            <div class="row mx-auto">
                 <t t-foreach="attachments" t-as="attachment">
                     <div class="col-2 o_existing_attachment_cell o_we_attachment_highlight my-2" t-att-data-id="attachment.id">
                         <t t-call="wysiwyg.widgets.file.existing.remove"/>
diff --git a/addons/web_editor/static/tests/wysiwyg_snippets_tests.js b/addons/web_editor/static/tests/wysiwyg_snippets_tests.js
index 842aeea1f2f..f708b76b016 100644
--- a/addons/web_editor/static/tests/wysiwyg_snippets_tests.js
+++ b/addons/web_editor/static/tests/wysiwyg_snippets_tests.js
@@ -358,7 +358,7 @@ QUnit.test('background-image', function (assert) {
             $('#oe_manipulators .oe_overlay_options a.snippet-option-background[data-choose-image]').click();
 
             defMediaDialogInit.then(function () {
-                $('.o_select_media_dialog .existing-attachments .o_existing_attachment_cell').click();
+                $('.o_select_media_dialog .o_we_existing_attachments .o_existing_attachment_cell').click();
                 $('.o_select_media_dialog .modal-footer .btn-primary').click();
             });
 
diff --git a/addons/web_unsplash/static/src/js/unsplash_image_widget.js b/addons/web_unsplash/static/src/js/unsplash_image_widget.js
index 8244f12b4b9..8fb78e7ccb6 100644
--- a/addons/web_unsplash/static/src/js/unsplash_image_widget.js
+++ b/addons/web_unsplash/static/src/js/unsplash_image_widget.js
@@ -177,7 +177,7 @@ widgetsMedia.ImageWidget.include({
      */
     _toggleUnsplashContainer: function (show) {
         this._unsplash.isActive = show;
-        this.$('.existing-attachments').toggleClass('d-none', show);
+        this.$('.o_we_existing_attachments').toggleClass('d-none', show);
         this.$('.unsplash_img_container').toggleClass('d-none', !show);
         this.$('.o_we_search_icon > span').text(show ? "Unsplash" : "");
     },
diff --git a/addons/web_unsplash/static/src/xml/unsplash_image_widget.xml b/addons/web_unsplash/static/src/xml/unsplash_image_widget.xml
index 73593b25e50..5610e977b9b 100644
--- a/addons/web_unsplash/static/src/xml/unsplash_image_widget.xml
+++ b/addons/web_unsplash/static/src/xml/unsplash_image_widget.xml
@@ -2,7 +2,7 @@
 <templates id="template" xml:space="preserve">
 
 <t t-extend="wysiwyg.widgets.file">
-    <t t-jquery=".existing-attachments" t-operation="after">
+    <t t-jquery=".o_we_existing_attachments" t-operation="after">
         <div class="unsplash_img_container"></div>
     </t>
 </t>