diff --git a/arch/x86/kernel/entry.asm b/arch/x86/kernel/entry.asm
index e52c7a2..4d5c343 100644
--- a/arch/x86/kernel/entry.asm
+++ b/arch/x86/kernel/entry.asm
@@ -40,8 +40,7 @@ mboot:
     MULTIBOOT_MEMORY_INFO	equ 1<<1
     MULTIBOOT_HEADER_MAGIC	equ 0x1BADB002
     MULTIBOOT_HEADER_FLAGS	equ MULTIBOOT_PAGE_ALIGN | MULTIBOOT_MEMORY_INFO
-    MULTIBOOT_CHECKSUM	equ -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
-    EXTERN code, bss, end
+    MULTIBOOT_CHECKSUM		equ -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS)
 
     ; This is the GRUB Multiboot header. A boot signature
     dd MULTIBOOT_HEADER_MAGIC