diff --git a/homeassistant/components/sensor/worldtidesinfo.py b/homeassistant/components/sensor/worldtidesinfo.py
index c9a42f3cb11..f23d244cf3a 100644
--- a/homeassistant/components/sensor/worldtidesinfo.py
+++ b/homeassistant/components/sensor/worldtidesinfo.py
@@ -88,7 +88,7 @@ class WorldTidesInfoSensor(Entity):
                 return "High tide at %s" % (tidetime)
             elif "Low" in str(self.data['extremes'][0]['type']):
                 tidetime = time.strftime('%I:%M %p', time.localtime(
-                    self.data['extremes'][1]['dt']))
+                    self.data['extremes'][0]['dt']))
                 return "Low tide at %s" % (tidetime)
             else:
                 return STATE_UNKNOWN