diff --git a/xCAT-buildkit/share/xcat/kits/debian_template/preinst b/xCAT-buildkit/share/xcat/kits/debian_template/preinst
index a0b2977c5..6232bd33d 100644
--- a/xCAT-buildkit/share/xcat/kits/debian_template/preinst
+++ b/xCAT-buildkit/share/xcat/kits/debian_template/preinst
@@ -20,7 +20,7 @@ case "$1" in
     ;;
 
     upgrade)
-    if [ -f /tmp/<<<INSERT_kitcomponent_upgrade_flag_HERE>>> ]
+    if [ -f /tmp/<<<INSERT_kitcomponent_upgrade_flag_HERE>>> ]; then
     <<<INSERT_kitcomponent_preupgrade_script_HERE>>>
     fi
     ;;