diff --git a/avogadro/qtplugins/insertfragment/insertfragmentdialog.cpp b/avogadro/qtplugins/insertfragment/insertfragmentdialog.cpp
index 4b1c5de537..c9e9962f2b 100644
--- a/avogadro/qtplugins/insertfragment/insertfragmentdialog.cpp
+++ b/avogadro/qtplugins/insertfragment/insertfragmentdialog.cpp
@@ -118,7 +118,7 @@ InsertFragmentDialog::InsertFragmentDialog(QWidget* aParent, QString directory,
   if (m_implementation->crystalFiles)
     filters << "*.cif";
   else
-    filters << "*.cjson";
+    filters << "*.cjson" << "*.cml";
   m_implementation->model->setNameFilters(filters);
 
   m_implementation->proxy = new SortFilterTreeProxyModel(this);