diff --git a/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/header/actions-group/_notifications.less b/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/header/actions-group/_notifications.less
index c9c97930297cb..ceeb8d8eeb2b3 100644
--- a/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/header/actions-group/_notifications.less
+++ b/app/design/adminhtml/Magento/backend/Magento_Backend/web/css/source/module/header/actions-group/_notifications.less
@@ -103,6 +103,8 @@
         padding: .3em .5em;
         position: absolute;
         top: 50%;
+        min-width: 18px;
+        height: 18px;
     }
 }