diff --git a/run.py b/run.py
index ea8acc3..bebdb5c 100644
--- a/run.py
+++ b/run.py
@@ -108,7 +108,7 @@ def cycle(self):
             timeout = 10
             if brightness_cmd:
                 timeout = 20
-            heyu.send_command_raw(" ".join(cmd), timeout=timeout)
+            heyu.send_command_raw(" ".join([str(c) for c in cmd]), timeout=timeout)
             if brightness_cmd:
                 self.publish(addr, 'on', self.brightness.get(addr))
             else: