diff --git a/package/mac80211/Makefile b/package/mac80211/Makefile
index 0eb6fa803e..d2f568fa81 100644
--- a/package/mac80211/Makefile
+++ b/package/mac80211/Makefile
@@ -1299,6 +1299,7 @@ define Build/Prepare
 	rm -rf $(PKG_BUILD_DIR)/include/linux/bcma
 	rm -f $(PKG_BUILD_DIR)/include/linux/eeprom_93cx6.h
 	rm -f $(PKG_BUILD_DIR)/include/net/ieee80211.h
+	echo 'compat-wireless-$(PKG_VERSION)-$(PKG_RELEASE)-$(REVISION)' > $(PKG_BUILD_DIR)/compat_version
 endef
 
 ifneq ($(CONFIG_PACKAGE_kmod-cfg80211)$(CONFIG_PACKAGE_kmod-lib80211),)