diff --git a/collectd/files/plugin/collectd_base.py b/collectd/files/plugin/collectd_base.py
index 7959e75..6643693 100644
--- a/collectd/files/plugin/collectd_base.py
+++ b/collectd/files/plugin/collectd_base.py
@@ -139,7 +139,7 @@
                 'meta':   {'tagA': 'valA'}}
             {'type': 'dropped_bytes', 'values': [1,2]}
         """
-        raise NotImplemented("Must be implemented by the subclass!")
+        raise NotImplementedError("Must be implemented by the subclass!")
 
     def dispatch_metric(self, metric):
         values = metric['values']