diff --git a/mm/memory.c b/mm/memory.c
index d1cc9923320b..be592d434ad8 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -132,7 +132,7 @@ static int __init init_zero_pfn(void)
 	zero_pfn = page_to_pfn(ZERO_PAGE(0));
 	return 0;
 }
-core_initcall(init_zero_pfn);
+early_initcall(init_zero_pfn);
 
 
 #if defined(SPLIT_RSS_COUNTING)