diff --git a/addons/web_editor/static/src/js/editor/rte.summernote.js b/addons/web_editor/static/src/js/editor/rte.summernote.js
index 95ce86572ae..d8338fd622d 100644
--- a/addons/web_editor/static/src/js/editor/rte.summernote.js
+++ b/addons/web_editor/static/src/js/editor/rte.summernote.js
@@ -452,8 +452,11 @@ eventHandler.modules.linkDialog.showLinkDialog = function ($editable, $dialog, l
     $editable.data('range').select();
     $editable.data('NoteHistory').recordUndo();
 
-    var link = linkInfo.range.commonAncestor().closest('a');
-    linkInfo.className = link && link.className;
+    var commonAncestor = linkInfo.range.commonAncestor();
+    if (commonAncestor && commonAncestor.closest) {
+        var link = commonAncestor.closest('a');
+        linkInfo.className = link && link.className;
+    }
 
     var def = new $.Deferred();
     core.bus.trigger('link_dialog_demand', {