diff --git a/poky/meta/classes/waf.bbclass b/poky/meta/classes/waf.bbclass
index 188119f..df0ab8d 100644
--- a/poky/meta/classes/waf.bbclass
+++ b/poky/meta/classes/waf.bbclass
@@ -8,7 +8,7 @@
 B = "${WORKDIR}/build"
 do_configure[cleandirs] += "${B}"
 
-EXTRA_OECONF_append = " ${PACKAGECONFIG_CONFARGS}"
+EXTRA_OECONF:append = " ${PACKAGECONFIG_CONFARGS}"
 
 EXTRA_OEWAF_BUILD ??= ""
 # In most cases, you want to pass the same arguments to `waf build` and `waf