diff --git a/mm/memblock.c b/mm/memblock.c
index 1c7b647..d300f13 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -706,7 +706,7 @@
 	return 0;
 }
 
-int __init_memblock memblock_remove_range(struct memblock_type *type,
+static int __init_memblock memblock_remove_range(struct memblock_type *type,
 					  phys_addr_t base, phys_addr_t size)
 {
 	int start_rgn, end_rgn;