diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index 84c223479e3c9b9e3aa64ad25d4f633909f497dd..1fdb350c4a58e9c0c385dbb4b00be4c2064132f9 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -155,7 +155,7 @@ extra_header_fields:
 #else
 	.quad	0				# ImageBase
 #endif
-	.long	0x20				# SectionAlignment
+	.long	CONFIG_PHYSICAL_ALIGN		# SectionAlignment
 	.long	0x20				# FileAlignment
 	.word	0				# MajorOperatingSystemVersion
 	.word	0				# MinorOperatingSystemVersion