diff --git a/xCAT-buildkit/share/xcat/kits/debian_template/postinst b/xCAT-buildkit/share/xcat/kits/debian_template/postinst
index 54d566f4e..d12542954 100644
--- a/xCAT-buildkit/share/xcat/kits/debian_template/postinst
+++ b/xCAT-buildkit/share/xcat/kits/debian_template/postinst
@@ -21,7 +21,7 @@ set -e
 case "$1" in
     configure)
     <<<INSERT_kitcomponent_postinstall_script_HERE>>>
-    if [ -f /tmp/<<<INSERT_kitcomponent_upgrade_flag_HERE>>> ]
+    if [ -f /tmp/<<<INSERT_kitcomponent_upgrade_flag_HERE>>> ]; then
     <<<INSERT_kitcomponent_postupgrade_script_HERE>>>
     rm /tmp/<<<INSERT_kitcomponent_upgrade_flag_HERE>>>
     fi