diff --git a/client_software/0050_nextcloud_desktopclient/user_run.sh b/client_software/0050_nextcloud_desktopclient/user_run.sh
index 2abf296..cc5a332 100755
--- a/client_software/0050_nextcloud_desktopclient/user_run.sh
+++ b/client_software/0050_nextcloud_desktopclient/user_run.sh
@@ -78,8 +78,9 @@ for CLIENT_DATA_DECLARE_LINE in "${CLIENT_DATA_SYNC[@]}"; do
 #        fi
 #        _nc_first=0
         if [ -d "${CLIENT_DATA_SYNC_LINE[0]}" ]; then
-            echo "Old unsynced Folder ${CLIENT_DATA_SYNC_LINE[0]} was found, renaming to ${CLIENT_DATA_SYNC_LINE[0]}_bak."
-            mv "${CLIENT_DATA_SYNC_LINE[0]}" "${CLIENT_DATA_SYNC_LINE[0]}_bak"
+            _nc_bak="${CLIENT_DATA_SYNC_LINE[0]}_$(date '+%Y%m%d%H%M%S').bak"
+            echo "Old unsynced Folder ${CLIENT_DATA_SYNC_LINE[0]} was found, renaming to ${_nc_bak}."
+            mv "${CLIENT_DATA_SYNC_LINE[0]}" "${_nc_bak}"
         fi
         mkdir -p ${CLIENT_DATA_SYNC_LINE[0]}
         SYNCCMD="$BASECMD --userid ${DAVTOKEN_USER} --apppassword ${DAVTOKEN_PASS} --localdirpath ${CLIENT_DATA_SYNC_LINE[0]} --remotedirpath ${CLIENT_DATA_SYNC_LINE[1]} --serverurl https://${SERVERFQDN_NC}"