diff --git a/arch/x86/include/asm/realmode.h b/arch/x86/include/asm/realmode.h
index b2988c0ed829..3327ffb38926 100644
--- a/arch/x86/include/asm/realmode.h
+++ b/arch/x86/include/asm/realmode.h
@@ -44,7 +44,6 @@ struct trampoline_header {
 extern struct real_mode_header *real_mode_header;
 extern unsigned char real_mode_blob_end[];
 
-extern unsigned long init_rsp;
 extern unsigned long initial_code;
 extern unsigned long initial_gs;