diff --git a/package/libubox/libubox.mk b/package/libubox/libubox.mk
index e6d95b771..572cfe9d9 100644
--- a/package/libubox/libubox.mk
+++ b/package/libubox/libubox.mk
@@ -15,7 +15,7 @@ LIBUBOX_DEPENDENCIES += lua
 LIBUBOX_CONF_OPTS += -DLUAPATH=$(STAGING_DIR)/usr/lib/lua/5.1 \
 	-DLUA_CFLAGS=-I$(STAGING_DIR)/usr/include
 else
-LIBUBOX_CONF_OPTS += -DBUILD_LUA:BOOL=OFF
+LIBUBOX_CONF_OPTS += -DBUILD_LUA=OFF
 endif
 
 $(eval $(cmake-package))