diff --git a/androidtv/basetv/basetv.py b/androidtv/basetv/basetv.py
index 50bfecb0..8762cd0e 100644
--- a/androidtv/basetv/basetv.py
+++ b/androidtv/basetv/basetv.py
@@ -423,6 +423,9 @@ def _parse_device_properties(self, properties):
         properties : str, None
             The output of the ADB command that retrieves the device properties
 
+        Returns
+        -------
+        None
         This method fills in the ``device_properties`` attribute, which is a dictionary with keys
         ``'serialno'``, ``'manufacturer'``, ``'model'``, ``'sw_version'`` and ``'product_id'``