From fea0e79beacb827b7449be65775258bce68ed1c6 Mon Sep 17 00:00:00 2001
From: Andrew Scheller <github@loowis.durge.org>
Date: Thu, 26 May 2016 20:14:51 +0100
Subject: [PATCH] DistanceSensor: make the max_distance setter more like
 __init__

---
 gpiozero/input_devices.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/gpiozero/input_devices.py b/gpiozero/input_devices.py
index f1153f7..05682cb 100644
--- a/gpiozero/input_devices.py
+++ b/gpiozero/input_devices.py
@@ -615,7 +615,7 @@ class DistanceSensor(SmoothedInputDevice):
 
     @max_distance.setter
     def max_distance(self, value):
-        if not (value > 0):
+        if value <= 0:
             raise ValueError('invalid maximum distance (must be positive)')
         t = self.threshold_distance
         self._max_distance = value