diff --git a/src/plugins/pluginmanager.py b/src/plugins/pluginmanager.py
index d290d36a2..ccd5adb80 100644
--- a/src/plugins/pluginmanager.py
+++ b/src/plugins/pluginmanager.py
@@ -539,6 +539,9 @@ class PluginManager(object):
             self.plugins.remove(plugin)
             if self._plugin_has_entry_in_global_config(plugin):
                 self._remove_plugin_entry_in_global_config(plugin)
+            del sys.modules[plugin.__module__.split('.')[-1]]
+            del plugin.__module__.split('.')[-1]
+            del plugin
 
     def get_plugin_by_path(self, plugin_dir):
         for plugin in self.plugins: