fix wrong chart name when using autodetection

diff --git a/plugins.d/python.d.plugin b/plugins.d/python.d.plugin
index 3e13be027b9eb605f629e7a1f2c0056069eecd2a..2acfe16fd325eff9f928f403de3fd23ca93ae1d6 100755 (executable)
--- a/plugins.d/python.d.plugin
+++ b/plugins.d/python.d.plugin
@@ -331,7 +331,7 @@ class PythonCharts(object):
                         if job.override_name is not None:
                             job.name = job.override_name
                             msg.debug(job.chart_name + " changing chart name to: " + job.__module__ + job.name)
-                            job.chart_name = job.__module__ + job.name
+                            job.chart_name = job.__module__ + '_' + job.name
                             overridden.append(job.name)
                     except Exception:
                         pass