diff --git a/conf/layer.conf b/conf/layer.conf
index db4f407..3e52466 100644
--- a/conf/layer.conf
+++ b/conf/layer.conf
@@ -9,7 +9,7 @@ LAYERDEPENDS_sourcery = "core"
 
 # Let us add layer-specific bbappends which are only applied when that
 # layer is included in our configuration
-BBFILES += "${@' '.join('${LAYERDIR}/%s/recipes*/*/*.bbappend' % layer \
-               for layer in BBFILE_COLLECTIONS.split())}"
+BBFILES += "${@' '.join('${LAYERDIR}/%s/recipes*/*/*.%s' % (layer, ext) \
+               for layer in BBFILE_COLLECTIONS.split() for ext in ['bb', 'bbappend'])}"
 
 TCMODE = "external-sourcery"