diff --git a/README.md b/README.md
index 963726e..fa2af16 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ In short:
 
 ## Device message converter script
 
-converts messages to **JSON, KML, GPX, GEOJSON, CSV**
+Converts messages to **KML, GPX, GEOJSON, CSV**
 
 * [NodeJS](message-converter/nodejs)
 * [Python](message-converter/python)
diff --git a/message-converter/README.md b/message-converter/README.md
new file mode 100644
index 0000000..528f473
--- /dev/null
+++ b/message-converter/README.md
@@ -0,0 +1,6 @@
+# Device message converter script
+
+Converts messages to **KML, GPX, GEOJSON, CSV**
+
+* [NodeJS](message-converter/nodejs)
+* [Python](message-converter/python)
diff --git a/message-converter/nodejs/README.md b/message-converter/nodejs/README.md
index bfc112f..cd83222 100644
--- a/message-converter/nodejs/README.md
+++ b/message-converter/nodejs/README.md
@@ -1,6 +1,6 @@
 # message converter
 
-Script to convert flespi device messages to **JSON, KML, GPX, GEOJSON, CSV** formats
+Script to convert flespi device messages to **KML, GPX, GEOJSON, CSV** formats
 
 ## Install the dependencies
 ```bash
diff --git a/message-converter/python/README.md b/message-converter/python/README.md
index 85e4eda..e262689 100644
--- a/message-converter/python/README.md
+++ b/message-converter/python/README.md
@@ -1,6 +1,6 @@
 # message converter
 
-Script to convert flespi device messages to **JSON, KML, GPX, GEOJSON, CSV** formats
+Script to convert flespi device messages to **KML, GPX, GEOJSON, CSV** formats
 
 ### Run script
 ```bash
diff --git a/message-converter/python/convert.py b/message-converter/python/convert.py
index 5c0c2ae..545eacb 100644
--- a/message-converter/python/convert.py
+++ b/message-converter/python/convert.py
@@ -3,8 +3,6 @@
 import sys
 import time
 from datetime import datetime
-from xml.etree.ElementTree import Element, SubElement, tostring
-from xml.dom import minidom
 
 def main():
     # Read command line arguments
@@ -58,8 +56,8 @@ def convert_kml(data, device_id, from_timestamp, to_timestamp):
 <Placemark>
   <name>#{device_id}</name>
   <TimeSpan>
-    <begin>{format_unix_utc(from_timestamp)}</begin>
-    <end>{format_unix_utc(to_timestamp)}</end>
+    <begin>{format_unix_utc(int(from_timestamp))}</begin>
+    <end>{format_unix_utc(int(to_timestamp))}</end>
   </TimeSpan>
   <LineString>
     <coordinates>{coordinates}</coordinates>