diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 79cf578..5ed471b 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -588,6 +588,7 @@
 void sparse_init(void);
 #else
 #define sparse_init()	do {} while (0)
+#define sparse_index_init(_sec, _nid)  do {} while (0)
 #endif /* CONFIG_SPARSEMEM */
 
 #ifdef CONFIG_NODES_SPAN_OTHER_NODES