diff --git a/lib/elf/eint.h b/lib/elf/eint.h
index 9c952d2..52e4be3 100644
--- a/lib/elf/eint.h
+++ b/lib/elf/eint.h
@@ -4,14 +4,14 @@
  * REF: https://gabi.xinuos.com/elf/01-intro.html
  */
 
-#ifndef BFPG_ELF_INTEGERS_H
-# define BFPG_ELF_INTEGERS_H
+#ifndef BFPG_ELF_INT_H
+# define BFPG_ELF_INT_H
 
 # include <stdint.h>
 
 /* 32-Bit & 64-Bit Shared Integer Types */
-# define Elf_Addr(BITS) uint##BITS##_t
-# define Elf_Off(BITS)  uint##BITS##_t
+# define Elf_Addr(N) uint##N##_t
+# define Elf_Off(N)  uint##N##_t
 typedef uint16_t Elf_Half;        /* Unsigned medium integer  */
 typedef uint32_t Elf_Word;        /* Unsigned integer         */
 typedef  int32_t Elf_Sword;       /* Signed integer           */
@@ -36,4 +36,4 @@ typedef Elf_Sxword Elf64_Sxword;
 # undef Elf_Addr
 # undef Elf_Off
 
-#endif /* BFPG_ELF_INTEGERS_H */
+#endif /* BFPG_ELF_INT_H */