diff --git a/meta-security/recipes-mac/ccs-tools/README b/meta-security/recipes-mac/ccs-tools/README
index 4a4faa7..0381814 100644
--- a/meta-security/recipes-mac/ccs-tools/README
+++ b/meta-security/recipes-mac/ccs-tools/README
@@ -9,4 +9,4 @@
 To initialize:
 /usr/lib/ccs/init_policy
 
-DISTRO_FEATURES_append = " tomoyo"
+DISTRO_FEATURES:append = " tomoyo"