diff --git a/DeviceStatus/Sender/sender.py b/DeviceStatus/Sender/sender.py
index 659e4b0..ddc69b5 100755
--- a/DeviceStatus/Sender/sender.py
+++ b/DeviceStatus/Sender/sender.py
@@ -64,7 +64,7 @@ while True:
 
             device.last_status = pin_status
 
-            info = client.publish("device-status/" % (device.name), str(pin_status), 1)
+            info = client.publish("device-status/%s" % (device.name), str(pin_status), 1)
 
             info.wait_for_publish()