diff --git a/run/disk.sh b/run/disk.sh
index c33291d..3b73753 100644
--- a/run/disk.sh
+++ b/run/disk.sh
@@ -80,6 +80,14 @@ if [ ! -f "${DATA}" ]; then
 
 fi
 
+AGENT="${STORAGE}/${BASE}.agent"
+[ ! -f "$AGENT" ] && echo "1" > "$AGENT"
+AGENT_VERSION=$(cat "${AGENT}")
+
+if ((AGENT_VERSION < 3)); then
+  echo "INFO: The installed Guest Agent in DSM is an outdated version, please upgrade it."
+fi
+
 KVM_DISK_OPTS="\
     -device virtio-scsi-pci,id=hw-synoboot,bus=pcie.0,addr=0xa \
     -drive file=${BOOT},if=none,id=drive-synoboot,format=raw,cache=none,aio=native,discard=on,detect-zeroes=on \
diff --git a/run/power.sh b/run/power.sh
index 81efb6a..8473fc0 100644
--- a/run/power.sh
+++ b/run/power.sh
@@ -49,9 +49,9 @@ _graceful_shutdown(){
     echo
     echo "Could not send shutdown command to guest, error: $RESPONSE"
 
-    FILE="${STORAGE}/${BASE}.agent"
-    [ ! -f "$FILE" ] && echo "1" > "$FILE"
-    AGENT_VERSION=$(cat "${FILE}")
+    AGENT="${STORAGE}/${BASE}.agent"
+    [ ! -f "$AGENT" ] && echo "1" > "$AGENT"
+    AGENT_VERSION=$(cat "${AGENT}")
 
     if ((AGENT_VERSION < 2)); then
       echo