diff --git a/mirror b/mirror
index 3a28814..201a4c0 100755
--- a/mirror
+++ b/mirror
@@ -17,7 +17,7 @@ MAX_RUNS="3"			# Maximum number of runs
 IPV4="5.101.171.215"
 DATADIR="/data/depository"
 RSYNC_COMMAND="/usr/bin/rsync"
-RSYNC_REMOTE_OPTIONS=('-4' "--address=$IPV4" '--no-motd' '--contimeout=30' '--timeout=60' '-aH' '--chmod=go-w,+rX' '--partial' '--partial-dir=.rsync-tmp' '--delete-delay' '--delay-updates')
+RSYNC_REMOTE_OPTIONS=('-4' "--address=$IPV4" '--no-motd' '--contimeout=30' '--timeout=60' '-aH' '--no-owner' '--no-group' '--chmod=go-w,+rX' '--partial' '--partial-dir=.rsync-tmp' '--delete-delay' '--delay-updates')
 RSYNC_LOCAL_OPTIONS=('-aH' '--chmod=go-w,+rX' '--partial' '--partial-dir=.rsync-tmp' '--delay-updates')
 # RSYNC_VERBOSE=('--verbose' '--human-readable')
 # RSYNC_VERBOSE=('--progress' '--verbose' '--stats' '--human-readable')
@@ -163,6 +163,24 @@ SLACKARCHIVE_FILTER=('--exclude=source/' '--include=/slackware-15.0' '--include=
 
 #######################################################################################################################################
 
+# Only allow the script to be run from the wrapper.
+[[ ! -v MIRRORING_USER ]] && {
+  echo "ERROR: this script should only be run by mirror-wrapper" >&2
+  exit 1
+}
+
+# Make sure the users match.
+[[ "$(whoami)" != "$MIRRORING_USER" ]] && {
+  echo "ERROR: this script should be run by the '$MIRRORING_USER' only - use su to run manually" >&2
+  exit 1
+}
+
+# Move to the depository directory.
+cd "$DATADIR" >/dev/null 2>&1 || {
+  echo "ERROR: $DATADIR does not exist." >&2
+  exit 1
+}
+
 # Only allow one copy of the script to run at any time.
 # shellcheck disable=SC2154
 if [[ "$FLOCK" != "$0" ]]; then
@@ -178,12 +196,6 @@ if [[ "$FLOCK" != "$0" ]]; then
   fi
 fi
 
-# Move to the depository directory.
-cd "$DATADIR" >/dev/null 2>&1 || {
-  echo "ERROR: $DATADIR does not exist." >&2
-  exit 1
-}
-
 # Variables
 declare -a LFTP_LIST RSYNC_LIST