diff --git a/xCAT-genesis-builder/debuild-xcat-genesis-base b/xCAT-genesis-builder/debuild-xcat-genesis-base
index d6e029345..7ec4109d0 100755
--- a/xCAT-genesis-builder/debuild-xcat-genesis-base
+++ b/xCAT-genesis-builder/debuild-xcat-genesis-base
@@ -17,6 +17,8 @@ set -x
 [ -n "${RPM_PACKAGE}" ] || exit 1
 [ -f "${RPM_PACKAGE}" ] || exit 1
 
+umask 0022
+
 EXTRACT_DIR="${RPM_PACKAGE##*/}"
 EXTRACT_DIR="${EXTRACT_DIR%%-snap*}"
 
@@ -39,7 +41,7 @@ fi
 
 sed -i -e "/^Description:/i Breaks: xcat-genesis-scripts-${PACKAGE_ARCH//x86_64/amd64} (<< 2.13.10)" "${EXTRACT_DIR}/debian/control"
 
-cat >"${EXTRACT_DIR}/debian/preinst" <<-EOF
+cat >"${EXTRACT_DIR}/debian/preinst" <<EOF
 #!/bin/bash
 
 [ -d /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/bin ] &&
@@ -52,6 +54,10 @@ cat >"${EXTRACT_DIR}/debian/preinst" <<-EOF
 	rm -rf /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/lib64
 [ -d /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/var/run ] &&
 	rm -rf /opt/xcat/share/xcat/netboot/genesis/${PACKAGE_ARCH}/fs/var/run
+
+exit 0
 EOF
 
+chmod 0755 "${EXTRACT_DIR}/debian/preinst"
+
 ( cd "${EXTRACT_DIR}" && debian/rules binary )