diff --git a/src/aiy/_drivers/_led.py b/src/aiy/_drivers/_led.py
index 9578a1c2..44951723 100644
--- a/src/aiy/_drivers/_led.py
+++ b/src/aiy/_drivers/_led.py
@@ -90,7 +90,7 @@ def _animate(self):
                 running = self.running
             if not running:
                 return
-            if state:
+            if state is not None:
                 if not self._parse_state(state):
                     raise ValueError('unsupported state: %d' % state)
             if self.iterator: