diff --git a/homekit/controller/ble_impl/__init__.py b/homekit/controller/ble_impl/__init__.py
index 53ed1e5..b3fd21a 100644
--- a/homekit/controller/ble_impl/__init__.py
+++ b/homekit/controller/ble_impl/__init__.py
@@ -79,7 +79,12 @@ def __init__(self, pairing_data, adapter='hci0'):
             logger.debug("failed to list_accessories_and_characteristics from device:\n%s", repr(e))
 
     def close(self):
-        pass
+        """Closes an active BLE session
+           If a session is necessary for the next action, it will be instantiated
+        """
+        if self.session:
+            self.session.close()
+            self.session = None
 
     def list_accessories_and_characteristics(self):
         if 'accessories' in self.pairing_data: