diff --git a/poky/meta/classes/package_ipk.bbclass b/poky/meta/classes/package_ipk.bbclass
index 5eb910c..d1b317b 100644
--- a/poky/meta/classes/package_ipk.bbclass
+++ b/poky/meta/classes/package_ipk.bbclass
@@ -8,7 +8,7 @@
 PKGWRITEDIRIPK = "${WORKDIR}/deploy-ipks"
 
 # Program to be used to build opkg packages
-OPKGBUILDCMD ??= "opkg-build -Z xz"
+OPKGBUILDCMD ??= 'opkg-build -Z xz -a "${XZ_DEFAULTS}"'
 
 OPKG_ARGS += "--force_postinstall --prefer-arch-to-version"
 OPKG_ARGS += "${@['', '--no-install-recommends'][d.getVar("NO_RECOMMENDATIONS") == "1"]}"