diff --git a/lib/logitech/unifying_receiver/api.py b/lib/logitech/unifying_receiver/api.py
index 59096505..25a377f0 100644
--- a/lib/logitech/unifying_receiver/api.py
+++ b/lib/logitech/unifying_receiver/api.py
@@ -114,7 +114,7 @@ class Receiver(object):
 		if self.handle == 0:
 			return
 
-		for number in range(1, MAX_ATTACHED_DEVICES):
+		for number in range(1, 1 + MAX_ATTACHED_DEVICES):
 			dev = get_device(self.handle, number)
 			if dev is not None:
 				yield dev