diff --git a/include/asm-generic/pe.h b/include/asm-generic/pe.h
index b9d674b..cd5b6ad 100644
--- a/include/asm-generic/pe.h
+++ b/include/asm-generic/pe.h
@@ -51,6 +51,9 @@
 #define IMAGE_SUBSYSTEM_EFI_RUNTIME_DRIVER	12
 #define IMAGE_SUBSYSTEM_EFI_ROM			13
 
+/* DLL characteristics */
+#define IMAGE_DLLCHARACTERISTICS_NX_COMPAT	0x100
+
 /* Section flags */
 #define IMAGE_SCN_CNT_CODE			0x00000020
 #define IMAGE_SCN_CNT_INITIALIZED_DATA		0x00000040