2 files changed, 5 insertions, 5 deletions

diff --git a/otautil/include/otautil/sysutil.h b/otautil/include/otautil/sysutil.h
index 326db8644..48e9011e5 100644
--- a/otautil/include/otautil/sysutil.h
+++ b/otautil/include/otautil/sysutil.h
@@ -102,11 +102,11 @@ class MemMapping {
 };
 
 // Reboots the device into the specified target, by additionally handling quiescent reboot mode.
-// All unknown targets reboot into Android.
+// 'target' can be an empty string, which indicates booting into Android.
 bool Reboot(std::string_view target);
 
 // Triggers a shutdown.
-bool Shutdown(std::string_view target);
+bool Shutdown();
 
 // Returns a null-terminated char* array, where the elements point to the C-strings in the given
 // vector, plus an additional nullptr at the end. This is a helper function that facilitates
diff --git a/otautil/sysutil.cpp b/otautil/sysutil.cpp
index a8829858d..420db4cac 100644
--- a/otautil/sysutil.cpp
+++ b/otautil/sysutil.cpp
@@ -229,9 +229,9 @@ bool Reboot(std::string_view target) {
   return android::base::SetProperty(ANDROID_RB_PROPERTY, cmd);
 }
 
-bool Shutdown(std::string_view target) {
-  std::string cmd = "shutdown," + std::string(target);
-  return android::base::SetProperty(ANDROID_RB_PROPERTY, cmd);
+bool Shutdown() {
+  // "shutdown" doesn't need a "reason" arg nor a comma.
+  return android::base::SetProperty(ANDROID_RB_PROPERTY, "shutdown");
 }
 
 std::vector<char*> StringVectorToNullTerminatedArray(const std::vector<std::string>& args) {