diff --git a/meta-poky/conf/local.conf.sample b/meta-poky/conf/local.conf.sample
index b6a9e272b5..3ef25a2a89 100644
--- a/meta-poky/conf/local.conf.sample
+++ b/meta-poky/conf/local.conf.sample
@@ -242,7 +242,7 @@ PACKAGECONFIG:append:pn-qemu-system-native = " sdl"
 
 # You can also enable the Gtk UI frontend, which takes somewhat longer to build, but adds
 # a handy set of menus for controlling the emulator.
-#PACKAGECONFIG_append_pn-qemu-system-native = " gtk+"
+#PACKAGECONFIG:append:pn-qemu-system-native = " gtk+"
 
 #
 # Hash Equivalence
diff --git a/meta-poky/conf/local.conf.sample.extended b/meta-poky/conf/local.conf.sample.extended
index d3a0f762bc..17e95828d5 100644
--- a/meta-poky/conf/local.conf.sample.extended
+++ b/meta-poky/conf/local.conf.sample.extended
@@ -380,7 +380,7 @@ DISTRO_FEATURES:remove = "x11"
 # Enable LTO system-wide
 #
 #require conf/distro/include/lto.inc
-#DISTRO_FEATURES_append = " lto"
+#DISTRO_FEATURES:append = " lto"
 
 #
 # Set PS1 for SDK