2 files changed, 18 insertions, 6 deletions
diff --git a/collectors/python.d.plugin/hddtemp/README.md b/collectors/python.d.plugin/hddtemp/README.md
index 03474c89..aaaf2142 100644
--- a/collectors/python.d.plugin/hddtemp/README.md
+++ b/collectors/python.d.plugin/hddtemp/README.md
@@ -1,13 +1,27 @@
-# hddtemp
+<!--
+title: "Hard drive temperature monitoring with Netdata"
+custom_edit_url: https://github.com/netdata/netdata/edit/master/collectors/python.d.plugin/hddtemp/README.md
+sidebar_label: "Hard drive temperature"
+-->
 
-Module monitors disk temperatures from one or more hddtemp daemons.
+# Hard drive temperature monitoring with Netdata
+
+Monitors disk temperatures from one or more `hddtemp` daemons.
 
 **Requirement:**
 Running `hddtemp` in daemonized mode with access on tcp port
 
 It produces one chart **Temperature** with dynamic number of dimensions (one per disk)
 
-## configuration
+## Configuration
+
+Edit the `python.d/hddtemp.conf` configuration file using `edit-config` from the Netdata [config
+directory](/docs/configure/nodes.md), which is typically at `/etc/netdata`.
+
+```bash
+cd /etc/netdata   # Replace this path with your Netdata config directory, if different
+sudo ./edit-config python.d/hddtemp.conf
+```
 
 Sample:
 
diff --git a/collectors/python.d.plugin/hddtemp/hddtemp.chart.py b/collectors/python.d.plugin/hddtemp/hddtemp.chart.py
index b5aaaeb3..6427aa18 100644
--- a/collectors/python.d.plugin/hddtemp/hddtemp.chart.py
+++ b/collectors/python.d.plugin/hddtemp/hddtemp.chart.py
@@ -6,12 +6,10 @@
 
 
 import re
-
 from copy import deepcopy
 
 from bases.FrameworkServices.SocketService import SocketService
 
-
 ORDER = [
     'temperatures',
 ]
@@ -30,7 +28,7 @@ class Disk:
     def __init__(self, id_, name, temp):
         self.id = id_.split('/')[-1]
         self.name = name.replace(' ', '_')
-        self.temp = temp if temp.isdigit() else 0
+        self.temp = temp if temp.isdigit() else None
 
     def __repr__(self):
         return self.id