diff --git a/assets/js/sections/common.js b/assets/js/sections/common.js
index aa0df7a8d..64e8c2b63 100644
--- a/assets/js/sections/common.js
+++ b/assets/js/sections/common.js
@@ -128,7 +128,7 @@ function qso_edit(id) {
             $('.menuOnBody').remove();
             BootstrapDialog.show({
                 title: lang_general_word_qso_data,
-                cssClass: 'edit-dialog',
+                cssClass: 'edit-dialog, bg-black bg-opacity-50',
                 size: BootstrapDialog.SIZE_WIDE,
                 nl2br: false,
                 message: html,