diff --git a/assets/stylesheets/modules/ai-helper/common/ai-helper.scss b/assets/stylesheets/modules/ai-helper/common/ai-helper.scss
index 1be28212..1d10085d 100644
--- a/assets/stylesheets/modules/ai-helper/common/ai-helper.scss
+++ b/assets/stylesheets/modules/ai-helper/common/ai-helper.scss
@@ -277,10 +277,11 @@
 }
 
 #reply-control {
+  .reply-details,
   .composer-popup {
     // need to raise the z-index here
     // because we need another layer to put the AI icon above dropdowns
-    // while also keeping them below the composer tips
+    // while also keeping them below the composer tips and reply details dropdowns
     z-index: z("composer", "dropdown") + 2;
   }