diff --git a/src/calibre/gui2/preferences/plugins.py b/src/calibre/gui2/preferences/plugins.py
index 1edd4fe5f9..8f77a03c24 100644
--- a/src/calibre/gui2/preferences/plugins.py
+++ b/src/calibre/gui2/preferences/plugins.py
@@ -266,7 +266,7 @@ class ConfigWidget(ConfigWidgetBase, Ui_Form):
 
     def add_plugin(self):
         path = choose_files(self, 'add a plugin dialog', _('Add plugin'),
-                filters=[(_('Plugins'), ['zip'])], all_files=False,
+                filters=[(_('Plugins') + ' (*.zip)', ['zip'])], all_files=False,
                     select_only_single_file=True)
         if not path:
             return