diff --git a/genesis-openembedded/package b/genesis-openembedded/package
index 2f22736..f0cebd5 100755
--- a/genesis-openembedded/package
+++ b/genesis-openembedded/package
@@ -179,8 +179,10 @@ sub _build_deb {
           . "if [ \"\${1:-}\" = configure ]; then\n"
           . "    mkdir -p /etc/xcat\n"
           . "    touch /etc/xcat/genesis-base-updated\n"
+          . "    root_stat=\$(stat -c '%i %d' / 2>/dev/null || :)\n"
+          . "    init_stat=\$(stat -c '%i %d' /proc/1/root/. 2>/dev/null || :)\n"
           . "    if [ -x /opt/xcat/sbin/mknb ] && [ -r /proc/cmdline ] && \\\n"
-          . "       [ \"\$(stat -c '%i %d' / 2>/dev/null)\" = \"\$(stat -c '%i %d' /proc/1/root/. 2>/dev/null)\" ]; then\n"
+          . "       [ -n \"\$root_stat\" ] && [ \"\$root_stat\" = \"\$init_stat\" ]; then\n"
           . "        if /opt/xcat/sbin/mknb '$architecture'; then\n"
           . "            rm -f /etc/xcat/genesis-base-updated\n"
           . "        else\n"
diff --git a/genesis-openembedded/rpm/xCAT-genesis-base.spec b/genesis-openembedded/rpm/xCAT-genesis-base.spec
index 12db225..e2db891 100644
--- a/genesis-openembedded/rpm/xCAT-genesis-base.spec
+++ b/genesis-openembedded/rpm/xCAT-genesis-base.spec
@@ -30,8 +30,10 @@ install -m 0644 xcat-core-revision %{buildroot}%{_docdir}/%{name}/
 %post
 mkdir -p /etc/xcat
 touch /etc/xcat/genesis-base-updated
+root_stat=$(stat -c '%%i %%d' / 2>/dev/null || :)
+init_stat=$(stat -c '%%i %%d' /proc/1/root/. 2>/dev/null || :)
 if [ -x /opt/xcat/sbin/mknb ] && [ -r /proc/cmdline ] && \
-   [ "$(stat -c '%%i %%d' / 2>/dev/null)" = "$(stat -c '%%i %%d' /proc/1/root/. 2>/dev/null)" ]; then
+   [ -n "$root_stat" ] && [ "$root_stat" = "$init_stat" ]; then
     if /opt/xcat/sbin/mknb %{genesis_arch}; then
         rm -f /etc/xcat/genesis-base-updated
     else