diff --git a/README.md b/README.md
index d683e56..384d3ba 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,8 @@ Export Pentair pool status to Influx DB so that it can be graphed with Grafana.
 
 Uses [screenlogicpy](https://github.com/dieselrabbit/screenlogicpy) python script to access the Pentair pool data.
 
+As `screenlogicpy` creates deeply nested Json objects and Influx DB only handles single depth Json objects, the objects that I am interested in are flattened in the function `publish_pentair_data`.
+
 ## Usage
 ```
 usage: pentair-async.py [-h] [-r] [--influxdb] [--influxdb_host INFLUXDB_HOST] [--influxdb_port INFLUXDB_PORT]