diff --git a/batman-adv/Makefile b/batman-adv/Makefile
index 1f68cdc..e261015 100644
--- a/batman-adv/Makefile
+++ b/batman-adv/Makefile
@@ -16,6 +16,7 @@ PKG_HASH:=b866b28dbbe5c9238abbdf5abbc30fc526dea56898ce4c1bd76d5c017843048b
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://downloads.open-mesh.org/batman/releases/batman-adv-$(PKG_VERSION)
 PKG_LICENSE:=GPL-2.0
+PKG_EXTMOD_SUBDIRS=net/batman-adv
 
 STAMP_CONFIGURED_DEPENDS := $(STAGING_DIR)/usr/include/mac80211-backport/backport/autoconf.h