diff --git a/mysqlbu-scripts.sh b/mysqlbu-scripts.sh
index 37207dc..80613ff 100755
--- a/mysqlbu-scripts.sh
+++ b/mysqlbu-scripts.sh
@@ -251,8 +251,8 @@ case $1 in
 			exit 1
 		fi
 		
-		if [ -z ${BACKUP_HOST_IP+x} ]; then BACKUPHOSTIP="--host=${BACKUP_HOST_IP}"; else BACKUPHOSTIP=""; fi
-		if [ -z ${BACKUP_HOST_PORT+x} ]; then BACKUPHOSTPORT="--port=${BACKUP_HOST_PORT}"; else BACKUPHOSTPORT=""; fi
+		if [ ! -z ${BACKUP_HOST_IP+x} ]; then BACKUPHOSTIP="--host=${BACKUP_HOST_IP}"; else BACKUPHOSTIP=""; fi
+		if [ ! -z ${BACKUP_HOST_PORT+x} ]; then BACKUPHOSTPORT="--port=${BACKUP_HOST_PORT}"; else BACKUPHOSTPORT=""; fi
 		
 		#innobackupex --defaults-file="$MYSQLCFG" --user="$MYSQLUSER" --password="$MYSQLPASS" \
 		#--incremental-basedir="${DAY_BACKUP_DIR}${BASE_BACKUP}" \