diff --git a/src/main/java/com/loomcom/symon/Bus.java b/src/main/java/com/loomcom/symon/Bus.java
index 63f8070..813c62e 100644
--- a/src/main/java/com/loomcom/symon/Bus.java
+++ b/src/main/java/com/loomcom/symon/Bus.java
@@ -113,6 +113,7 @@ public class Bus {
             deviceMap.put(priority, deviceSet);
         }
         
+        device.setBus(this);
         deviceSet.add(device);
         buildDeviceAddressArray();
     }