diff --git a/include/asm-um/elf.h b/include/asm-um/elf.h
index b3a7258..7908f8f 100644
--- a/include/asm-um/elf.h
+++ b/include/asm-um/elf.h
@@ -13,7 +13,7 @@
 
 #define elf_check_arch(x) (1)
 
-#ifdef CONFIG_64_BIT
+#ifdef CONFIG_64BIT
 #define ELF_CLASS ELFCLASS64
 #else
 #define ELF_CLASS ELFCLASS32
diff --git a/include/asm-um/page.h b/include/asm-um/page.h
index 3620a08..102eb3d 100644
--- a/include/asm-um/page.h
+++ b/include/asm-um/page.h
@@ -27,7 +27,7 @@
 #define clear_user_page(page, vaddr, pg)	clear_page(page)
 #define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
 
-#if defined(CONFIG_3_LEVEL_PGTABLES) && !defined(CONFIG_64_BIT)
+#if defined(CONFIG_3_LEVEL_PGTABLES) && !defined(CONFIG_64BIT)
 
 typedef struct { unsigned long pte_low, pte_high; } pte_t;
 typedef struct { unsigned long long pmd; } pmd_t;
diff --git a/include/asm-um/pgtable-3level.h b/include/asm-um/pgtable-3level.h
index bdbc3f9..d309f3a 100644
--- a/include/asm-um/pgtable-3level.h
+++ b/include/asm-um/pgtable-3level.h
@@ -145,7 +145,7 @@
  */
 #define PTE_FILE_MAX_BITS	32
 
-#ifdef CONFIG_64_BIT
+#ifdef CONFIG_64BIT
 
 #define pte_to_pgoff(p) ((p).pte >> 32)