diff --git a/include/linux/mm.h b/include/linux/mm.h
index 6702171f8d0a0712a199816fa8723357f7124b46..32309f6542e816634c27030f3311fe1d995241cf 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -605,10 +605,6 @@ static inline pte_t maybe_mkwrite(pte_t pte, struct vm_area_struct *vma)
 #define NODE_NOT_IN_PAGE_FLAGS
 #endif
 
-#ifndef PFN_SECTION_SHIFT
-#define PFN_SECTION_SHIFT 0
-#endif
-
 /*
  * Define the bit shifts to access each section.  For non-existent
  * sections we define the shift as 0; that plus a 0 mask ensures