diff --git a/boot/header.S b/boot/header.S
index 23e9a14..6380b32 100644
--- a/boot/header.S
+++ b/boot/header.S
@@ -7,7 +7,7 @@
 // end of the boot sector), with the remainder of the header being provided by
 // setup.S.
 //
-// Copyright (C) 2020-2023 Martin Whitaker.
+// Copyright (C) 2020-2024 Martin Whitaker.
 //
 // Derived from Linux 5.6 arch/x86/boot/header.S:
 //
@@ -190,6 +190,7 @@ section_table:
 	.word	0				# NumberOfRelocations
 	.word	0				# NumberOfLineNumbers
 	.long	IMAGE_SCN_MEM_READ		\
+	      | IMAGE_SCN_MEM_WRITE		\
 	      | IMAGE_SCN_MEM_EXECUTE		\
 	      | IMAGE_SCN_CNT_CODE		# Characteristics (section flags)