diff --git a/addons/mail/static/src/component_hooks/use_drag_visible_dropzone/use_drag_visible_dropzone.js b/addons/mail/static/src/component_hooks/use_drag_visible_dropzone/use_drag_visible_dropzone.js
index 86694083fce..59a2a82b1e1 100644
--- a/addons/mail/static/src/component_hooks/use_drag_visible_dropzone/use_drag_visible_dropzone.js
+++ b/addons/mail/static/src/component_hooks/use_drag_visible_dropzone/use_drag_visible_dropzone.js
@@ -4,8 +4,6 @@ const { useState, onMounted, onWillUnmount } = owl.hooks;
 
 /**
  * This hook handle the visibility of the dropzone based on drag & drop events.
- * It needs a ref to a dropzone, so you need to specify a t-ref="dropzone" in
- * the template of your component.
  *
  * @returns {Object}
  */
diff --git a/addons/mail/static/src/components/attachment_box/attachment_box.xml b/addons/mail/static/src/components/attachment_box/attachment_box.xml
index 5b576a3ed3e..dcfee7e5d73 100644
--- a/addons/mail/static/src/components/attachment_box/attachment_box.xml
+++ b/addons/mail/static/src/components/attachment_box/attachment_box.xml
@@ -16,7 +16,6 @@
                         <DropZone
                             className="'o_AttachmentBox_dropZone'"
                             onDropzoneFilesDropped="_onDropZoneFilesDropped"
-                            t-ref="dropzone"
                         />
                     </t>
                     <t t-if="attachmentBoxView.chatter.attachmentList">
diff --git a/addons/mail/static/src/components/composer/composer.xml b/addons/mail/static/src/components/composer/composer.xml
index 66eb5792469..51d4c56f00b 100644
--- a/addons/mail/static/src/components/composer/composer.xml
+++ b/addons/mail/static/src/components/composer/composer.xml
@@ -21,7 +21,6 @@
                     <DropZone
                         className="'o_Composer_dropZone'"
                         onDropzoneFilesDropped="_onDropZoneFilesDropped"
-                        t-ref="dropzone"
                     />
                 </t>
                 <FileUploader localId="composerView.fileUploaderView.localId"/>