diff --git a/meta/recipes-core/kbd/kbd_2.4.0.bb b/meta/recipes-core/kbd/kbd_2.4.0.bb
index 8a68d647e2..4b23f1a89d 100644
--- a/meta/recipes-core/kbd/kbd_2.4.0.bb
+++ b/meta/recipes-core/kbd/kbd_2.4.0.bb
@@ -31,7 +31,7 @@ FILES:${PN}-keymaps = "${datadir}/keymaps"
 FILES:${PN}-unimaps = "${datadir}/unimaps"
 
 do_install:append () {
-    if [ ${@bb.utils.contains('DISTRO_FEATURES', 'pam', 'yes', '', d)} = yes ] \
+    if [ "${@bb.utils.contains('DISTRO_FEATURES', 'pam', 'yes', 'no', d)}" = "yes" ] \
     && [ -f ${D}${sysconfdir}/pam.d/vlock ]; then
         mv -f ${D}${sysconfdir}/pam.d/vlock ${D}${sysconfdir}/pam.d/vlock.kbd
     fi