diff --git a/sensors/2.0/default/Sensors.cpp b/sensors/2.0/default/Sensors.cpp
index 4346ee1..75030e0 100644
--- a/sensors/2.0/default/Sensors.cpp
+++ b/sensors/2.0/default/Sensors.cpp
@@ -133,7 +133,7 @@
 
 Return<void> Sensors::registerDirectChannel(const SharedMemInfo& /* mem */,
                                             registerDirectChannel_cb _hidl_cb) {
-    _hidl_cb(Result::INVALID_OPERATION, 0 /* channelHandle */);
+    _hidl_cb(Result::INVALID_OPERATION, -1 /* channelHandle */);
     return Return<void>();
 }