diff --git a/src/components/middle/composer/AttachmentModal.module.scss b/src/components/middle/composer/AttachmentModal.module.scss
index 17664b399..03bac1520 100644
--- a/src/components/middle/composer/AttachmentModal.module.scss
+++ b/src/components/middle/composer/AttachmentModal.module.scss
@@ -124,7 +124,7 @@
     }
 
     .MentionTooltip {
-      z-index: 0;
+      z-index: 1;
       right: 0 !important;
     }
   }