diff --git a/proxmox/backup.pve.content.sh b/proxmox/backup.pve.content.sh
index cbe4d40..43854cf 100755
--- a/proxmox/backup.pve.content.sh
+++ b/proxmox/backup.pve.content.sh
@@ -103,6 +103,18 @@ define_vars() {                                                 # {{{
 		retention_time="${DEFAULT_RETENTION_TIME}"
 	fi
 	## }}}
+	## If user_bkp_dir wasn't defined  {{{
+	if [ -z "${user_bkp_dir}" ]; then
+		## Use default user as owner of backup files
+		user_bkp_dir="${DEFAULT_USER}"
+	fi
+	## }}}
+	## If group_bkp_dir wasn't defined  {{{
+	if [ -z "${group_bkp_dir}" ]; then
+		## Use default group for backup files
+		group_bkp_dir="${DEFAULT_GROUP}"
+	fi
+	## }}}
 
 }
 # }}}