diff --git a/mm/memory.c b/mm/memory.c
index 2a84308..b3c42f0 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2361,7 +2361,7 @@
 		int write_access, pte_t orig_pte)
 {
 	pgoff_t pgoff = (((address & PAGE_MASK)
-			- vma->vm_start) >> PAGE_CACHE_SHIFT) + vma->vm_pgoff;
+			- vma->vm_start) >> PAGE_SHIFT) + vma->vm_pgoff;
 	unsigned int flags = (write_access ? FAULT_FLAG_WRITE : 0);
 
 	pte_unmap(page_table);