diff --git a/app/src/main/aidl/com/geeksville/mesh/IMeshService.aidl b/app/src/main/aidl/com/geeksville/mesh/IMeshService.aidl
index 61daff671..c8c5d09e7 100644
--- a/app/src/main/aidl/com/geeksville/mesh/IMeshService.aidl
+++ b/app/src/main/aidl/com/geeksville/mesh/IMeshService.aidl
@@ -62,6 +62,7 @@ interface IMeshService {
     /// If a macaddress we will try to talk to our device, if null we will be idle.
     /// Any current connection will be dropped (even if the device address is the same) before reconnecting.
     /// Users should not call this directly, only used internally by the MeshUtil activity
+    /// Returns true if the device address actually changed, or false if no change was needed
     boolean setDeviceAddress(String deviceAddr);
 
     /// Get basic device hardware info about our connected radio.  Will never return NULL.  Will throw
diff --git a/app/src/main/aidl/com/geeksville/mesh/IRadioInterfaceService.aidl b/app/src/main/aidl/com/geeksville/mesh/IRadioInterfaceService.aidl
index 6bd32d13f..1be0c0ad6 100644
--- a/app/src/main/aidl/com/geeksville/mesh/IRadioInterfaceService.aidl
+++ b/app/src/main/aidl/com/geeksville/mesh/IRadioInterfaceService.aidl
@@ -14,5 +14,6 @@ interface IRadioInterfaceService {
     /// If a macaddress we will try to talk to our device, if null we will be idle.
     /// Any current connection will be dropped (even if the device address is the same) before reconnecting.
     /// Users should not call this directly, called only by MeshService
+    /// Returns true if the device address actually changed, or false if no change was needed
     boolean setDeviceAddress(String deviceAddr);
 }