diff --git a/src/plugins/gui.py b/src/plugins/gui.py
index 5867785db..7733261f4 100644
--- a/src/plugins/gui.py
+++ b/src/plugins/gui.py
@@ -114,6 +114,11 @@ class PluginsWindow(object):
         self.plugins_notebook.set_current_page(0)
         self.xml.get_object('close_button').grab_focus()
 
+        for plugin in gajim.plugin_manager.active_plugins:
+            if type(plugin).__name__ == 'PluginInstaller':
+                plugin.on_activate(self)
+                break
+
         self.window.show_all()
         gtkgui_helpers.possibly_move_window_in_current_desktop(self.window)