diff --git a/broadcastradio/1.1/ITuner.hal b/broadcastradio/1.1/ITuner.hal
index dd7c844..7511629 100644
--- a/broadcastradio/1.1/ITuner.hal
+++ b/broadcastradio/1.1/ITuner.hal
@@ -65,6 +65,7 @@
      *               Client application MUST verify vendor/product name
      *               before setting this parameter to anything else.
      * @return result OK if the list was successfully retrieved.
+     *                INVALID_ARGUMENTS if invalid arguments are passed
      *                NOT_READY if the scan is in progress.
      *                NOT_STARTED if the scan has not been started, client may
      *                call startBackgroundScan to fix this.
diff --git a/broadcastradio/1.1/default/Tuner.cpp b/broadcastradio/1.1/default/Tuner.cpp
index 4a6c691..ae5848c 100644
--- a/broadcastradio/1.1/default/Tuner.cpp
+++ b/broadcastradio/1.1/default/Tuner.cpp
@@ -201,25 +201,25 @@
 }
 
 Return<ProgramListResult> Tuner::startBackgroundScan() {
-    return ProgramListResult::NOT_INITIALIZED;
+    return ProgramListResult::UNAVAILABLE;
 }
 
 Return<void> Tuner::getProgramList(const hidl_string& filter __unused, getProgramList_cb _hidl_cb) {
     hidl_vec<ProgramInfo> pList;
     // TODO(b/34054813): do the actual implementation.
-    _hidl_cb(ProgramListResult::NOT_INITIALIZED, pList);
+    _hidl_cb(ProgramListResult::NOT_STARTED, pList);
     return Void();
 }
 
 Return<void> Tuner::isAnalogForced(isAnalogForced_cb _hidl_cb) {
     // TODO(b/34348946): do the actual implementation.
-    _hidl_cb(Result::NOT_INITIALIZED, false);
+    _hidl_cb(Result::INVALID_STATE, false);
     return Void();
 }
 
 Return<Result> Tuner::setAnalogForced(bool isForced __unused) {
     // TODO(b/34348946): do the actual implementation.
-    return Result::NOT_INITIALIZED;
+    return Result::INVALID_STATE;
 }
 
 } // namespace implementation