diff --git a/meta-openembedded/meta-networking/recipes-netkit/netkit-rsh/netkit-rsh_0.17.bb b/meta-openembedded/meta-networking/recipes-netkit/netkit-rsh/netkit-rsh_0.17.bb
index a6716d0..f6c05da 100644
--- a/meta-openembedded/meta-networking/recipes-netkit/netkit-rsh/netkit-rsh_0.17.bb
+++ b/meta-openembedded/meta-networking/recipes-netkit/netkit-rsh/netkit-rsh_0.17.bb
@@ -37,7 +37,7 @@
 LDFLAGS += " -L${STAGING_LIBDIR} -lutil -lcrypt"
 
 PACKAGECONFIG ??= ""
-PACKAGECONFIG += "${@bb.utils.filter('DISTRO_FEATURES', 'pam', d)}"
+PACKAGECONFIG_append = " ${@bb.utils.filter('DISTRO_FEATURES', 'pam', d)}"
 PACKAGECONFIG[pam] = " , --without-pam, libpam, libpam"
 
 COMPATIBLE_HOST_libc-musl = 'null'