diff --git a/startup.sh b/startup.sh
index 350769d..66a873e 100755
--- a/startup.sh
+++ b/startup.sh
@@ -7,6 +7,10 @@ cd client
 HOSTNAME="$HOSTNAME" docker-compose up -d
 cd -
 
+
+# allow empty match on * to prevent manual check if role_dir and osd_dir exists
+shopt -s nullglob
+
 #bring up mon, mds, mgr
 for role_dir in /ceph/m*; do
     role_name=$(basename "$role_dir")