diff --git a/tests/test_485_fuzz.py b/tests/test_485_fuzz.py
index 96029a4..03216d0 100755
--- a/tests/test_485_fuzz.py
+++ b/tests/test_485_fuzz.py
@@ -3,8 +3,7 @@
 # Test: 485 fuzzer
 # ----------------
 # Repeatedly write random data to sensor via 485.
-# After that, try to read some input registers.
-# (address and baudrate is hardcoded)
+# (after thataddress and baudrate is hardcoded)
 #
 # Return 0 if read was successful, 1 otherwise.
 #
@@ -27,3 +26,8 @@ for i in range(0,16):
     if bytes_sent != len(random_data):
         print(f'Warning: failed to write all bytes (sent {bytes_sent}/{len_random_data})')
     time.sleep(0.05)
+serial_device.close()
+# read sensor
+s = Sensor(address=address, baudrate=baudrate)
+print(f'Trying to read sensor:\n\tTemperature {s.T} C\n\tCO2 {s.CO2} ppm')
+s.close()