diff --git a/power.sh b/power.sh
index 40696b5..e78c0ac 100644
--- a/power.sh
+++ b/power.sh
@@ -25,29 +25,8 @@ _graceful_shutdown(){
   echo "Received $1 signal, shutting down..."
   echo 0 > "${_QEMU_SHUTDOWN_COUNTER}"
 
-  # Don't send the powerdown signal because vDSM ignores ACPI signals
-  # echo 'system_powerdown' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}">/dev/null
-
-  # Send shutdown command to guest agent tools instead via serial port
-  RESPONSE=$(curl -s -m 2 -S http://127.0.0.1:2210/write?command=6 2>&1)
-
-  if [[ ! "${RESPONSE}" =~ "\"success\"" ]] ; then
-
-    echo "Could not send shutdown command to guest, error: $RESPONSE"
-
-    FILE="${IMG}/agent.ver"
-    [ ! -f "$FILE" ] && echo "1" > "$FILE"
-    AGENT_VERSION=$(cat "${FILE}")
-
-    if ((AGENT_VERSION < 2)); then
-      echo "Please update the agent to allow gracefull shutdowns..."
-      pkill -f qemu-system-x86_64
-    else
-      # Send a NMI interrupt which will be detected by the kernel
-      echo 'nmi' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}">/dev/null
-    fi
-
-  fi
+  # Send the shutdown (system_powerdown) command to the QMP monitor
+  echo 'system_powerdown' | nc -q 1 -w 1 localhost "${QEMU_MONPORT}">/dev/null
 
   while [ "$(cat ${_QEMU_SHUTDOWN_COUNTER})" -lt "${QEMU_POWERDOWN_TIMEOUT}" ]; do